The ratios are: surface area 9:121, volume 27:1331, width 3:11.
(a) The ratio of the surface area of the model to the surface area of the original can be found by using the scale factor to find the ratio of the corresponding side lengths. Since surface area is proportional to the square of the side length, we can use this ratio squared to find the ratio of the surface areas.
The ratio of the corresponding side lengths is 3:11, so the ratio of the surface areas is (3/11)^2, which simplifies to 9/121.
Therefore, the ratio of the surface area of the model to the surface area of the original is 9:121.
(b) The ratio of the volume of the model to the volume of the original can be found using the same method as above, but with volume instead of surface area. Since volume is proportional to the cube of the side length, we can use this ratio cubed to find the ratio of the volumes.
The ratio of the corresponding side lengths is 3:11, so the ratio of the volumes is (3/11)^3, which simplifies to 27/1331.
Therefore, the ratio of the volume of the model to the volume of the original is 27:1331.
(c) The ratio of the width of the model to the width of the original can be found directly from the scale factor, since width is one of the corresponding side lengths.
The ratio of the corresponding side lengths is 3:11, so the ratio of the widths is 3:11.
Therefore, the ratio of the width of the model to the width of the original is 3:11.
Overall, the ratios are: surface area 9:121, volume 27:1331, width 3:11.
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1. The data sel below represents the number of animals in different exhibits at a zoo.
48, 86, 15, 27, 18, 52, 103
a. Write the data from least to greatest.
h. What is the minimum number of animals?
c. What is the maximum number of animals?
d. What is the median number of animals?
e. What is the median of the first half of the data? (first quartile)
f. What is the median of the second half of the data? (third quartile)
g. What is the interquartile range?
Answer:
a) 15, 18, 27, 48, 52, 86, 103
b) Minimum number = 15
c) Maximum number = 103
d) Median = 48
e) First quartile = 18
f) Third quartile = 86
g) Interquartile range = 68
Step-by-step explanation:
Part aTo write the data from least to greatest, arrange the numbers in ascending order:
15, 18, 27, 48, 52, 86, 103[tex]\hrulefill[/tex]
Part bThe minimum number in a set of data is the smallest value.
Therefore, the minimum number of animals is 15.
[tex]\hrulefill[/tex]
Part cThe maximum number in a set of data is the greatest value.
Therefore, the maximum number of animals is 103.
[tex]\hrulefill[/tex]
Part dThe median of a set of data is the middle value when all data values are placed in order of size.
[tex]\begin{array}{ccccccc}\sf 15, &\sf 18, &\sf 27, &\sf 48, &\sf 52, &\sf 86,& \sf 103\\ &&&\uparrow&&&\\&&&\sf median&&&\end{array}[/tex]
Therefore, the median is the fourth number, which is 48.
[tex]\hrulefill[/tex]
Part eThe lower quartile (Q₁) is the median of the data values to the left of the median.
[tex]\begin{array}{ccccccc}\sf 15, &\sf 18, &\sf 27, &\sf 48, &\sf 52, &\sf 86,& \sf 103\\ &\uparrow &&\uparrow&&&\\&\sf Q_1&&\sf median&&&\end{array}[/tex]
Therefore, the median of the first half of the data is 18.
[tex]\hrulefill[/tex]
Part fThe lower quartile (Q₃) is the median of the data values to the right of the median.
[tex]\begin{array}{ccccccc}\sf 15, &\sf 18, &\sf 27, &\sf 48, &\sf 52, &\sf 86,& \sf 103\\ &&&\uparrow &&\uparrow&\\&&&\sf median&&\sf Q_3&\end{array}[/tex]
Therefore, the median of the second half of the data is 86.
[tex]\hrulefill[/tex]
Part gThe interquartile range (IQR) is the difference between the third quartile (Q₃) and the first quartile (Q₁).
[tex]\begin{aligned}\sf IQR &=\sf Q_3 - Q_1 \\&= \sf 86 - 18 \\&= \sf 68\end{aligned}[/tex]
Therefore, the interquartile range is 68.
PLEASE I NEED HELP ASAP
8.4, 42, 210,....
In the sequence above, each term after the first is equal to the previous term times n. What is
the value of the next term in the sequence?
(A) 650
(B) 825
(C) 1,050
(D) 3,050
(E) 5,250
Answer:
C) 1,050
Step-by-step explanation:
We can see that to get from 8.4 to 42 and to get from 42 to 210, we have to multiply by 5.
To complete the sequence, multiply 210 by 5
210·5
=1,050
Hope this helps!
(3) Determine whether the given series is absolutely convergent, conditionally convergent or divergent. Justify your answer. 5 (k (-1)+1 Vk2 k=1 (1) Use the Comparison Test or the Limit Comparison Test to determine the convergence or divergence of the following series. Justify your answer. 1 zVk vk-1 k=2
The given series are in conditionally convergent
To determine whether the given series is absolutely convergent, conditionally convergent, or divergent, we will use the Comparison Test.
Series in question:
∑ [[tex]5(k(-1)^k + 1)] / (k^2),[/tex] k = 1 to ∞
Step 1: Find the absolute value of the series
| 5([tex]k(-1)^k + 1) / k^2[/tex] |
Step 2: Simplify the absolute value
[tex]5(k + (-1)^k) / k^2[/tex]
Step 3: Use the Comparison Test
We will compare this series to the series ∑ 5k / [tex]k^2,[/tex] k = 1 to ∞.
Since [tex](-1)^k[/tex] is always either 1 or -1, we know that [tex]5(k + (-1)^k) / k^2 \leq 5k / k^2.[/tex]
Step 4: Determine if the comparison series converges
The comparison series can be simplified as
∑ 5 / k, k = 1 to ∞, which is a harmonic series that is known to be divergent.
Step 5: Determine the original series' convergence status
Since the comparison series is divergent, we cannot determine if the original series is absolutely convergent using the Comparison Test.
However, we can now investigate if the series is conditionally convergent by considering the alternating series
∑ (-1)^k(5k) / [tex]k^2[/tex], k = 1 to ∞.
Since the series' terms decrease in magnitude (5k / [tex]k^2[/tex] decreases as k increases) and the limit of the terms as k approaches infinity is zero, the series is conditionally convergent by the Alternating Series Test.
In conclusion, the given series is conditionally convergent.
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6. Quadrilateral ABCD is dilated with center C and a scale factor of 1/2.Draw A'B'C'D'.
Thus, the coordinates of Quadrilateral A'B'C'D' after the dilation with the scale factor of 1/2 are - A'(1.5, 2), B'(0.5, 5), C'(6, 7), D'(4.5, 1.4).
Explain about the dilation:In geometry, a dilation is a transformation that alters an object's size without altering its general shape.
If the dilation factor is greater than 1, the item grows in size. The size shrinks .if the factor is between 0 and 1, and such dilations are occasionally referred to as compressions.Dilation is a particular kind of transformation in geometry that modifies an object's size while maintaining its overall shape.
Given:
scale factor = 1/2
coordinates of Quadrilateral ABCD
A(3,4) , B(1,10) ,C(12,14), D(9,3)
Now, coordinates about the dilation with centre C:, multiply each coordinate with 1/2.
A'(3*1/2,4*1/2) --> A'(1.5, 2)
B'(1*1/2,10*1/2) ---> B'(0.5, 5)
C'(12*1/2,14*1/2), --> C'(6, 7)
D'(9*1/2,3*1/2) ---> D'(4.5, 1.4)
Thus, the coordinates of Quadrilateral A'B'C'D' after the dilation with the scale factor of 1/2 are - A'(1.5, 2), B'(0.5, 5), C'(6, 7), D'(4.5, 1.4).
Graph is attached.
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) Nadia buys 4 1/5 pounds of plums. Nadia used a 55 cent coupon off her entire purchase. Her total after the coupon was $3. 23. If c represents the cost per pound for the plums, create and solve an equation to determine the cost per pound for the plums
If c represents the cost per pound for the plums, the cost per pound for the plums is $0.90.
First, we need to determine the total cost of the plums before the coupon was applied.
4 1/5 pounds can be written as a mixed number:
4 1/5 = 21/5
So, the total cost of the plums without the coupon can be found by multiplying the cost per pound (c) by 21/5:
Total cost = c * 21/5
Now we can create an equation to represent the total cost after the coupon was applied:
Total cost - coupon = $3.23
Substituting the expression for total cost:
c * 21/5 - 0.55 = 3.23
To solve for c, we can start by adding 0.55 to both sides:
c * 21/5 = 3.78
Then, we can isolate c by multiplying both sides by the reciprocal of 21/5:
c = 3.78 / (21/5)
c = 0.90
Therefore, the cost per pound for the plums is $0.90.
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Pls help me I need it
The number of triangles formed or the interior angle sum should be matched to each regular polygon as follows;
Number of triangles formed is 4 ⇒ regular hexagonInterior angle sum is 1,440 ⇒ regular decagonInterior angle sum is 1,800 ⇒ regular dodecagonNumber of triangles formed is 6 ⇒ regular octagon.How to determine the number of triangles and interior angle sum?In Mathematics and Geometry, the sum of the interior angles of both a regular and irregular polygon can be calculated by using this formula:
Sum of interior angles = 180 × (n - 2)
1,440 = 180 × (n - 2)
1,440 = 180n - 360
180n = 1,440 + 360
n = 1,800/180
n = 10 (decagon).
Sum of interior angles = 180 × (n - 2)
1,800 = 180 × (n - 2)
1,800 = 180n - 360
180n = 1,800 + 360
n = 2,160/180
n = 12 (dodecagon).
Generally speaking, the number of triangles in a regular polygon (n-gon) can be calculated by using this formula;
Number of triangles = n - 2
4 = n - 2
n = 4 + 2 = 6 (regular hexagon).
Number of triangles = n - 2
6 = n - 2
n = 6 + 2 = 8 (regular octagon).
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Abc company’s budgeted sales for june, july, and august are 12,800, 16,800, and 14,800 units, respectively. abc requires 30% of the next month’s budgeted unit sales as finished goods inventory each month. budgeted ending finished goods inventory for may is 3,840 units. each unit that abc company produces uses 2 pounds of raw material. abc requires 25% of the next month’s budgeted production as raw material inventory each month.
The budgeted ending raw material inventory for May is 2,560 pounds, calculated by taking 25% of the next month's budgeted production (12,800 units) multiplied by 2 pounds per unit.
To solve this problem, we need to calculate the budgeted production and raw material inventory for June, July, and August.
For June:Budgeted production = 12,800 units + 30% * 16,800 units = 17,440 units
Raw material inventory = 25% * 17,440 units * 2 pounds = 8,720 pounds
For July:Budgeted production = 16,800 units + 30% * 14,800 units = 20,840 units
Raw material inventory = 25% * 20,840 units * 2 pounds = 10,420 pounds
For August:Budgeted production = 14,800 units + 30% * 20,840 units = 20,632 units
Raw material inventory = 25% * 20,632 units * 2 pounds = 10,316 pounds
To find the budgeted ending finished goods inventory for June, we need to subtract the budgeted sales for June from the budgeted production for June and add the budgeted ending finished goods inventory for May:
Budgeted ending finished goods inventory for June = 17,440 units - 12,800 units + 3,840 units = 8,480 units
Similarly, we can find the budgeted ending finished goods inventory for July and August:
Budgeted ending finished goods inventory for July = 20,840 units - 16,800 units + 8,480 units = 12,520 units
Budgeted ending finished goods inventory for August = 20,632 units - 14,800 units + 12,520 units = 18,352 units
Therefore, the budgeted ending finished goods inventory for June, July, and August are 8,480 units, 12,520 units, and 18,352 units, respectively. The budgeted raw material inventory for June, July, and August are 8,720 pounds, 10,420 pounds, and 10,316 pounds, respectively.
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What is the height of the mountain if the angle of elevation is 47° and the slope is 750 ft long?
The calculated height of the mountain is approximately 548.5 ft
Calculating the height of the mountainWe can use trigonometry to solve this problem. Let h be the height of the mountain. Then we have:
sin(47°) = h / 750
Multiplying both sides by 750, we get:
h = 750 sin 47°
Using a calculator, we find:
h ≈ 548.5 ft
Therefore, the height of the mountain is approximately 548.5 ft
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1. a forest fire has been burning for several days. the burned area, in acres, is given by
the equation y =(4,800) 24, where d is the number of days since the area of the
fire was first measured.
a. complete the table.
d, days since first
measurement
y, acres burned
since fire started
b. look at the value of y = 4,800 - 20
when d = -1. what does it tell you
about the area burned in the fire?
what about when d = -3?
4800
0
-1
2400
-2
1200
-3
600
-5
150
c. how much area had the fire burned
a week before it measured 4,800
acres? explain your reasoning.
a. d, days since first measurement y, acres burned since fire started
0 0, 1 4800, 2 9600, 3 14400, 4 19200, 5 24000. b. when d = -1, it tells that the area burned in the fire was 4780 acres one day before the area was first measured. When d = -3, y = 4680, this means that the area burned in the fire was 4680 acres three days before the area was first measured. c. The area burned a week before the fire measured 4800 acres was approximately 115.2 acres.
a. To complete the table, we need to plug in the values of d in the given equation and calculate the corresponding values of y.
d, days since first measurement
y, acres burned since fire started
0 0
1 4800
2 9600
3 14400
4 19200
5 24000
b. When d = -1, we have:
y = (4800)(24^(-1))^(1) = 4800 - 20 = 4780
This means that the area burned in the fire was 4780 acres one day before the area was first measured.
When d = -3, we have:
y = (4800)(24^(-3))^(1) = 4800 - 120 = 4680
This means that the area burned in the fire was 4680 acres three days before the area was first measured.
c. A week before the fire measured 4800 acres, the number of days since the fire started would be:
d = 4800 / (4800/24) = 24
Therefore, a week before the fire measured 4800 acres, the fire had been burning for 24 days. Plugging in this value in the given equation, we get:
y = (4800)(24^(-24/24))^(1) = 115.2
So, the area burned a week before the fire measured 4800 acres was approximately 115.2 acres.
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A wheel has a diameter of 40 cm, to the nearest 10 cm.
Write an inequality to show
a the lower and upper bounds for the diameter d of the wheel
b the lower and upper bounds for the circumference C of the wheel.
a) The diameter d of the wheel has bounds:
35 cm ≤ d ≤ 45 cm
b) The circumference C has bounds, using C = πd:
π * 35 cm ≤ C ≤ π * 45 cm
How to solveThe inequality representing the lower and upper bounds for the diameter d is:
35 cm ≤ d ≤ 45 cm
b) For the lower bound, we substitute the lower bound of the diameter (35 cm) into the formula:
[tex]C_l_o_w_e_r[/tex] = π * 35 cm
For the upper bound, we substitute the upper bound of the diameter (45 cm) into the formula:
[tex]C_u_p_p_e_r[/tex] = π * 45 cm
The inequality representing the lower and upper bounds for the circumference C is:
π * 35 cm ≤ C ≤ π * 45 cm
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the dimensions of a rectangular prism are shown on the map below. which of the following is closest to the total surface area of the figure?
How do you solve and set up?
The total surface area of the figure shown as a rectangular prism is 208. 6 cm
How to determine the total surface areaThe formula for calculating the total surface area of a rectangular prism is expressed as;
TSA = 2 (lh +wh + lw )
Such that the parameters are;
l is the lengthw is the widthh is the heightNow, substitute the values, we have;
TSA = 2(2(9) + 7.9(9) + 2(7.6)
expand the bracket, we have;
TSA = 2(18 + 71.1 + 15.2)
add the values
TSA = 2(104. 3)
TSA = 208. 6
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1. Sally Rose's charge account statement showed a previous balance of $6,472. 82, a finance charge of $12. 95,
new purchases of $1,697. 08, and a payment of $4,900. 50. What is her new balance?
a. $3,454. 99
c. $3,566. 44
b. $3,282. 35
d. $3,112. 78
Sally Rose's new balance is $3,282.35, and option (b) is the correct answer.
Sally Rose's charge account statement contains information about her previous balance, finance charge, new purchases, and payment. To determine her new balance, we need to take the previous balance, add the finance charge and new purchases, and then subtract the payment.
Starting with the previous balance of $6,472.82, we add the finance charge of $12.95 and new purchases of $1,697.08 to get a total of:
$6,472.82 + $12.95 + $1,697.08 = $8,182.85
Next, we subtract the payment of $4,900.50 to get the new balance:
$8,182.85 - $4,900.50 = $3,282.35
It's important to keep track of credit card balances to avoid accumulating too much debt and paying high interest charges. When making credit card payments, it's a good idea to pay more than the minimum amount due, which can help reduce the balance faster and save money on interest charges over time. The answer is option b).
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Lori went to the grocery store and bought 7 1/2 of a pounds of vegetables. Kale made up 1⁄5 of Lori's vegetables. How many pounds of kale did Lori buy?
The amount in pounds of kale Lori bought is 1 1/2 pounds.
To find out how many pounds of kale Lori bought, you need to multiply the total weight of the vegetables by the fraction that represents the proportion of kale.
In this case, you can calculate the amount of kale as follows:
(7 1/2) * (1/5)
First, convert the mixed number 7 1/2 to an improper fraction:
(7 * 2 + 1) / 2 = 15/2
Now multiply the two fractions:
(15/2) * (1/5)
Multiply the numerators together and the denominators together:
(15 * 1) / (2 * 5) = 15 / 10
Now, simplify the fraction:
15 ÷ 5 / 10 ÷ 5 = 3 / 2
So, Lori bought 3/2 or 1 1/2 pounds of kale from the grocery store. This means that out of the total 7 1/2 pounds of vegetables she purchased, 1 1/2 pounds were kale.
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I will give brainlyest
based on the possessions you currently own and the possessions you plan on
purchasing before moving into an apartment, create a list of the contents and their value
(amount they are worth) that you would use in determining the cost of your renters insurance.
remember, if an item is not listed, then you will not be able to receive money in case it is lost or
stolen.
By accurately listing your possessions and their values, you can ensure that you will receive the appropriate amount of money in case any of your belongings are lost or stolen.
To create this list, consider the following steps:
List your possessions: Start by creating a list of all the items you currently own and the ones you plan to purchase before moving into the apartment. Include furniture, electronics, appliances, clothing, and other personal belongings.
Determine the value of each item: Next, assign a monetary value to each item on your list. This can be the amount you paid for the item, its current market value, or a rough estimate based on similar items in the market.
Add up the total value: Add up the monetary values of all the items on your list to get the total value of your possessions. This will help you determine the amount of renters' insurance coverage you need to protect your belongings.
Research renters' insurance policies: Look for insurance providers that offer renters' insurance policies and compare their coverage options, deductibles, and premiums. Choose a policy that best suits your needs and budget.
Provide the list to the insurance provider: Once you have chosen an insurance provider, submit your list of possessions and their values. This will help them determine the appropriate coverage amount and premium for your renters' insurance policy.
Remember, by accurately listing your possessions and their values, you can ensure that you will receive the appropriate amount of money in case any of your belongings are lost or stolen.
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Use cylindrical coordinates Find the volume of the solid that is enclosed by the cone z = x 2 + y 2 and the sphere x 2 + y 2 + z 2 = 2
The volume of the solid is (7π - 8√2)/12 cubic units.
To find the volume of the solid enclosed by the cone and sphere in cylindrical coordinates, we first need to express the equations of the cone and sphere in cylindrical coordinates.
Cylindrical coordinates are expressed as (ρ, θ, z), where ρ is the distance from the origin to a point in the xy-plane, θ is the angle between the x-axis and a line connecting the origin to the point in the xy-plane, and z is the height above the xy-plane.
The cone z = x^2 + y^2 can be expressed in cylindrical coordinates as ρ^2 = z, and the sphere x^2 + y^2 + z^2 = 2 can be expressed as ρ^2 + z^2 = 2.
To find the limits of integration for ρ, θ, and z, we need to visualize the solid. The cone intersects the sphere at a circle in the xy-plane with radius 1. We can integrate over this circle by setting ρ = 1 and integrating over θ from 0 to 2π.
The limits of integration for z are from the cone to the sphere. At ρ = 1, the cone and sphere intersect at z = 1, so we integrate z from 0 to 1.
Therefore, the volume of the solid enclosed by the cone and sphere in cylindrical coordinates is
V = ∫∫∫ ρ dz dρ dθ, where the limits of integration are
0 ≤ θ ≤ 2π
0 ≤ ρ ≤ 1
0 ≤ z ≤ ρ^2 for ρ^2 ≤ 1, and 0 ≤ z ≤ √(2 - ρ^2) for ρ^2 > 1.
Integrating over z, we get
V = ∫∫ ρ(ρ^2) dρ dθ for ρ^2 ≤ 1, and
V = ∫∫ ρ(√(2 - ρ^2))^2 dρ dθ for ρ^2 > 1.
Evaluating the integrals, we get
V = ∫0^1 ∫0^2π ρ^3 dθ dρ = π/4
and
V = ∫1^√2 ∫0^2π ρ(2 - ρ^2) dθ dρ = π/3 - 2√2/3
Therefore, the total volume of the solid enclosed by the cone and sphere in cylindrical coordinates is
V = π/4 + π/3 - 2√2/3
= (7π - 8√2)/12 cubic units
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The given question is incomplete, the complete question is:
Use cylindrical coordinates Find the volume of the solid that is enclosed by the cone z = x^2 + y^2 and the sphere x^2 + y^2 + z^2 = 2
What is 7-12 problems. The image is attached.
The number of bases, faces, edges and vertices are;
7. 2, 4, 6, 6
8. 6, 5, 10, 10
9. 1, 4, 5, 5
10. 1, 5, 7 , 7
11. 1, 5, 7, 7
12. 1, 3, 4 , 4
How to determine the numberTo determine the number, we need to take the following into considerations;
An edge is a line segment that is between faces. Vertices are angular corners where two lines or edges and more meet between faces.A face is any of the sole flat surfaces of a solid objectBase is the surface the shape stands onLearn about edges at: https://brainly.com/question/22735873
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Vanessa's team played 8 games of basketball. During those 8 games her team's score was: 68, 76, 63, 58, 64, 75, 78 and 78.
What is the mean absolute deviation?
Please help!! Please answer it correctly too!!!! Whoever gets it correct gets brainliest!! and then I will give them 154 points!!!! please!!
The mean absolute deviation is 6.25.
To find the mean absolute deviation (MAD), we first need to find the mean of the scores:
Mean = (68 + 76 + 63 + 58 + 64 + 75 + 78 + 78) / 8 = 69.5
Next, we need to find the absolute deviation of each score from the mean. The absolute deviation is the absolute value of the difference between the score and the mean.
For example, the absolute deviation of the first score (68) is:
|68 - 69.5| = 1.5
We can calculate the absolute deviation for each score:
|68 - 69.5| = 1.5
|76 - 69.5| = 6.5
|63 - 69.5| = 6.5
|58 - 69.5| = 11.5
|64 - 69.5| = 5.5
|75 - 69.5| = 5.5
|78 - 69.5| = 8.5
|78 - 69.5| = 8.5
To find the MAD, we take the average of the absolute deviations:
MAD = (1.5 + 6.5 + 6.5 + 11.5 + 5.5 + 5.5 + 8.5 + 8.5) / 8 = 6.25
Therefore, the mean absolute deviation is 6.25.
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(b)
A sum of money was shared between Aziz and Ahmad in the ratio 3 : 7.
Aziz received $32 less than Ahmad. Find the sum of money shared by both of them.
HELPP MEEEE PLSS
The sum of money shared by both Aziz and Ahmad is $80.
To find the sum of money shared by Aziz and Ahmad, we'll use the given ratio and the difference between their shares.
1. We are given that Aziz and Ahmad share the money in the ratio 3:7. Let's represent Aziz's share as 3x and Ahmad's share as 7x.
2. It's mentioned that Aziz received $32 less than Ahmad. So, we can write an equation as follows: 7x - 3x = $32.
3. Simplify the equation: 4x = $32.
4. Solve for x: x = $32 / 4, x = $8.
5. Now, we can find the shares of Aziz and Ahmad. Aziz's share: 3x = 3 * $8 = $24. Ahmad's share: 7x = 7 * $8 = $56.
6. To find the total sum of money shared, add both shares: $24 + $56 = $80.
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For which values of k would be the pruduct of k/3x12 be greater than 12
The product (k/3) x 12 is greater than 12 for values of k greater than 3.
To determine the values of k for which the product (k/3) x 12 is greater than 12, follow these steps:
Step 1: Set up the inequality:
(k/3) x 12 > 12
Step 2: Simplify the inequality by dividing both sides by 12:
(k/3) > 1
Step 3: Multiply both sides by 3 to solve for k:
k > 3
So, the product (k/3) x 12 is greater than 12 for values of k greater than 3.
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The path the rover travels out of the crater is a distance of 180 m and covers a vertical distance of 65 meters, determine the angle of elevation of the room to the nearest thousands of degree
The angle of elevation of the room is approximately 19.1 degrees.
To determine the angle of elevation of the room, we need to use trigonometry. The angle of elevation is the angle between the horizontal plane and the line of sight from the rover to the room. We can use the tangent function to find this angle:
tan(angle of elevation) = opposite/adjacent
In this case, the opposite side is the vertical distance of 65 meters and the adjacent side is the horizontal distance of 180 meters. So we have:
tan(angle of elevation) = 65/180
To find the angle of elevation, we can take the inverse tangent (or arctan) of both sides:
angle of elevation = arctan(65/180)
Using a calculator, we get:
angle of elevation = 19.1 degrees (rounded to the nearest thousands of degree)
Therefore, the angle of elevation of the room is approximately 19.1 degrees.
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Find the average rate of change for the given function. f(x) = x² x + 6x between x = 0 and x = 7 The average rate of change is 13. (Simplify your answer.)
The average rate of change for the function f(x) = x² + 6x between x = 0 and x = 7 is 13.
To find the average rate of change for the given function f(x) = x² + 6x between x = 0 and x = 7, you can follow these steps: Calculate the value of the function at the given points.
f(0) = 0² + 6(0) = 0
f(7) = 7² + 6(7) = 49 + 42 = 91
Use the average rate of change formula, which is (f(b) - f(a)) / (b - a), where a and b are the given points.
Substitute the values into the formula:
Average rate of change = (f(7) - f(0)) / (7 - 0) = (91 - 0) / 7 = 91 / 7 = 13
Therefore the average rate of change for the function f(x) = x² + 6x between x = 0 and x = 7 is calculated to be 13.
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Steph Curry posts a video of a puppy playing the piano and shares it with 4 of his friends. The video goes viral and the number of shares increases by a factor of 10 every minute.
a. Write an equation to model this situation.
b. What is the average rate of change for the number of shares from 2 minutes to 4 minutes?
An equation to model this situation will be S(t) = 4 * 10^(t). The average rate of change for the number of shares from 2 minutes to 4 minutes is approximately 19,800 shares per minute.
a. Let S(t) be the number of shares of the video at time t in minutes after Steph Curry shared it with his friends. The initial number of shares is 4 (the 4 friends he shared it with), and the number of shares increases by a factor of 10 every minute. Therefore, we can model this situation with the exponential function:
S(t) = 4 * 10^(t)
b. The average rate of change for the number of shares from 2 minutes to 4 minutes can be calculated by finding the slope of the line connecting the points (2, S(2)) and (4, S(4)) on the graph of S(t). Using the equation S(t) = 4 * 10^(t), we have:
S(2) = 4 * 10^(2) = 400
S(4) = 4 * 10^(4) = 40,000
The slope of the line connecting these two points is:
(S(4) - S(2)) / (4 - 2) = (40,000 - 400) / 2 = 19,800
Therefore, the average rate of change for the number of shares from 2 minutes to 4 minutes is approximately 19,800 shares per minute.
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1 point) Compute the double integral (either in the order of integration given or with the order reversed). /2 V1 + cas"" () cos(a) drdy sin (1) Integral =
The value of the double integral is zero.
The order of integration is dr dy, which means we first integrate with respect to r and then with respect to y.
Thus, we can write the integral as:
[tex]\int^0_{2\pi} \int^0_{1 + cos(a)}[/tex] r sin(θ) dr dy
Here, we have used the given limits of integration for r and y. Now, we integrate with respect to r first, treating y as a constant.
∫r sin(θ) dr = -cos(θ)r
We can substitute the limits of integration for r, which gives:
-cos(θ)(1+cos(a)) + cos(θ)(0)
Simplifying this expression, we get:
-cos(θ)(1+cos(a))
Now, we integrate this expression with respect to y, using the limits 0 to 2π for θ.
[tex]\int ^0_{2\pi}[/tex] -cos(θ)(1+cos(a)) dy
We can integrate this expression by treating cos(a) as a constant and using the formula for integrating cosine functions:
Integral of cos(x) dx = sin(x) + C
Thus, we have:
(1+cos(a)) Integral from 0 to 2π of cos(θ) dy
= - (1+cos(a)) [sin(2π) - sin(0)]
= 0
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Let R be the triangle with vertices (0,0), (4,2) and (2,4). Calculate the volume of the solid above R and under z = x and assign the result to q5.
To find the volume of the solid above the triangle R and below the plane z = x, we can use a triple integral with cylindrical coordinates.
First, we can note that the triangle R lies in the x-y plane and is symmetric with respect to the line y = x. Therefore, we can consider the solid above the portion of R in the first quadrant and then multiply the result by 4 to get the total volume.
In cylindrical coordinates, we have:
z = r cos(theta)
x = r sin(theta)
The bounds for r and theta can be obtained by considering the equations of the lines that bound the portion of R in the first quadrant. These lines are:
y = (1/2) x
y = 4 - (1/2) x
Solving for x and y in terms of r and theta, we get:
x = r sin(theta)
y = r cos(theta)
Substituting these expressions into the equations of the lines and solving for r, we get:
r = 8 sin(theta) / (3 + 2 cos(theta))
The bounds for theta are 0 and pi/2, since we are considering the portion of R in the first quadrant.
The bounds for z are from z = 0 to z = x = r sin(theta).
Therefore, the triple integral for the volume is:
V = 4 * ∫[0, pi/2] ∫[0, 8 sin(theta) / (3 + 2 cos(theta))] ∫[0, r sin(theta)] 1 dz dr dtheta
This integral can be evaluated using standard techniques, such as trigonometric substitution. The result is:
V = 32/3
Therefore, q5 = 32/3.
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Which corectly renames 7/8 and 5/6 using a common denominator
The 7/8 and 5/6, when renamed using a common denominator of 24, become 21/24 and 20/24
How we find the common denominator?The two fractions 7/8 and 5/6 need to be renamed using a common denominator.
To find the common denominator, we must first identify a common multiple of the denominators 8 and 6.
The smallest common multiple of 8 and 6 is 24. We can convert both fractions to have a denominator of 24 by multiplying the numerator and denominator of 7/8 by 3/3 and the numerator and denominator of 5/6 by 4/4.
This results in 21/24 and 20/24, respectively.
Renaming fractions with a common denominator allows us to compare them more easily or perform arithmetic operations on them, which is essential in mathematical problem-solving.
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HELPPPP!!!!!!
Based on this information, which function best models the number of game consoles sold in millions x years since 2010?
A) g(x) = 20(1. 5)
B) g(x) = 0. 15(20)*
C) g(x) - 0. 150. 2)*
D) g(x) = 2000. 15)
The function that best models the number of game consoles sold in millions x years since 2010 is option B, g(x) = 0.15(20).
To answer this question, we need to identify the function that best models the number of game consoles sold in millions x years since 2010.
Option A can be simplified to g(x) = 30, which is a constant function. This means that it does not depend on the value of x and is not a good model for the number of game consoles sold over time.
Option B can be simplified to g(x) = 3x, which is a linear function. This means that the number of game consoles sold increases at a constant rate over time. This could be a good model for the number of game consoles sold, but we need to compare it to the other options.
Option C can be simplified to g(x) = 0.03x, which is also a linear function. However, the rate of increase is much slower than in option B. This is not a good model for the number of game consoles sold.
Option D can be simplified to g(x) = 300, which is a constant function like option A. Again, this is not a good model for the number of game consoles sold over time.
Therefore, the function that best models the number of game consoles sold in millions x years since 2010 is option B, g(x) = 0.15(20). This is a linear function that represents a constant rate of increase in the number of game consoles sold over time.
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complete question:
Based on this information, which function best models the number of game consoles
sold in millions x years since 2010?
A- g(x) = 0.15(20)^x
B- g(x) = 20(0.15)^x
C- g(x) = 20(1.5)^x
D- g(x) = 0.15(.2)^x
Write the equation for the translation of the graph of y = x + 7 one unit to the left.
Answer:
y=x+8
Step-by-step explanation:
since you are starting with the linear function y=x+7
a translation one unit to the left would be y=x+7(+1)
which gives us the answer y=x+8
what is an equation for the ellipse with foci (0, -5) and (0,5) and vertices (0, -9) and (0, 9)
Answer:
0,8
Step-by-step explanation:
Answer:
x^2 / 81 + y^2 / 56 = 1
Step-by-step explanation:
The center of the ellipse is at the midpoint of the foci, which is (0,0). The distance between the center and a vertex is the length of the semi-major axis a, which is 9. The distance between the center and a focus is c, which is 5. The equation for the ellipse is:
(x-0)^2 / 9^2 + (y-0)^2 / b^2 = 1
where b is the length of the semi-minor axis. To find b, you use the relationship:
b^2 = a^2 - c^2
b^2 = 9^2 - 5^2
b^2 = 56
Therefore, the equation for the ellipse is:
x^2 / 81 + y^2 / 56 = 1
Answer the questions below to determine what kind of function is depicted below
Answer:
This function is an exponential function because the base is a constant and the exponent is a variable.
Last month, Claire's bank statement said that she overdrew her account. Her bank balance was -45. 32−45. 32minus, 45, point, 32 euros. This month, Claire's bank balance is 17. 9217. 9217, point, 92 euros. What does this mean?
Choose 1 answer:
Choose 1 answer:
Claire's bank balance being -45.32 euros last month meant that she had spent more money than she had in her account, resulting in an overdraft. This means that she owed the bank money and would have to pay back the amount she had spent beyond her account balance along with any associated fees.
However, this month, Claire's bank balance has increased to 17.92 euros. This means that she has deposited money into her account or received a payment that has increased her account balance. It could also mean that she has spent less money than she has earned, resulting in a positive balance.
Having a positive bank balance is always a good thing because it means that you have money to spend and you are not in debt. It is important to keep track of your bank balance regularly and make sure that you do not overspend beyond your means to avoid overdraft fees and financial difficulties.
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