To produce an A note on a C string (5 notes higher) that is 70 cm long we should place a fret at a distance of 74.92cm from bridge.
To find where to place the fret, we use the formula:
distance from bridge = (string length) x [tex]2^{(n/12)[/tex]
In this case, the string length is 70 cm and we want to produce an A note on a C string, which is 5 notes higher. So n = 5.
distance from bridge = [tex]70 * 2^{(5/12)[/tex]
Using a calculator, we get:
distance from bridge ≈ 74.92 cm
Therefore, the answer is d. 74.92 cm, rounded to the nearest hundredth.
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Stephen has a counter that is orange on one side and brown on the other. The counter is shown below: A circular counter is shown. The top surface of the counter is shaded in a lighter shade of gray and Orange is written across this section. The bottom section of the counter is shaded in darker shade of gray and Brown is written across it. Stephen flips this counter 24 times. What is the probability that the 25th flip will result in the counter landing on orange side up? fraction 24 over 25 fraction 1 over 24 fraction 1 over 4 fraction 1 over 2
The probability that the 25th flip will result in the counter landing on orange side up is fraction 1 over 2. The correct answer is D.
The probability of an event occurring is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. In this case, Stephen has flipped the counter 24 times and he wants to know the probability of getting an orange side up on the 25th flip.
Since the counter has two sides - orange and brown, the probability of landing on the orange side is 1/2 or 0.5.
Each flip of the counter is independent of the others, so the previous flips do not affect the outcome of the 25th flip. Therefore, the probability of the 25th flip landing on the orange side up is still 1/2 or 0.5. The correct answer is D.
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A circumscribed angle is an angle whose sides are to a circle
A circumscribed angle is an angle whose sides are tangent to a circle. In other words, the angle is formed by two intersecting chords of the circle. The vertex of the angle is located outside of the circle, while the two endpoints of the angle lie on the circle.
Circumscribed angles have some important properties in geometry. For example, the measure of a circumscribed angle is half the measure of its intercepted arc (the arc of the circle that lies inside the angle). Additionally, if two angles intercept the same arc of a circle, they are congruent.
Circumscribed angles also appear frequently in trigonometry, where they are used to define the sine, cosine, and tangent functions. The sine of a circumscribed angle is defined as the ratio of the length of the opposite side of the angle to the length of the circle's radius. The cosine of a circumscribed angle is defined as the ratio of the length of the adjacent side of the angle to the length of the radius.
Finally, the tangent of a circumscribed angle is defined as the ratio of the length of the opposite side to the length of the adjacent side.
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You can use the formula V = lwh to find the volume of a box.
a. Write a quadratic equation in standard form that represents the volume of the box.
b. The volume of the box is 6 ft3. Solve the quadratic equation for x.
c. Use the solution from part (b) to find the length and width of the box.
Describe any extraneous solutions
Write the quadratic equation in standard form that represents the volume of the box:[tex]w^2 - 6w = 0[/tex]
Find the length, width, height a box with volume of 6 [tex]ft^3[/tex], given the formula V = lwh.Solve the quadratic equation for x and find the length and width of the box:
w(w - 6) = 0 (factor the quadratic)
w = 0 or w = 6 (apply the zero product property)
Since a box can't have a width of 0, we reject the solution w = 0.
So, the only solution is w = 6.
To find the length, we use the formula l = V/wh:
l = 6/(6h) = 1/h
The length depends on the value of h, but we can choose h = 1/6 ft to get a reasonable set of dimensions:
length = 1 ft
width = 6 ft
height = 1/6 ft
Therefore, the quadratic equation that represents the volume of the box is[tex]w^2 - 6w = 0[/tex], and the dimensions of the box are length = 1 ft, width = 6 ft, and height = 1/6 ft.
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A sphere has a radius of 12 cm. a cylinder has the same radius and has a height of 12 cm. what is the difference in their volumes in cubic cm? record your answer to the nearest hundredth. use 3.14
The difference in volumes between the sphere and the cylinder is approximately 3619.14 cubic cm.
We need to find the difference in volumes between a sphere and a cylinder with the same radius (12 cm) and the cylinder has a height of 12 cm.
Step 1: Find the volume of the sphere.
The formula for the volume of a sphere is V_sphere = (4/3)πr³.
V_sphere = (4/3) × 3.14 × (12 cm)³
V_sphere = (4/3) × 3.14 × 1728 cm³
V_sphere ≈ 9047.78 cm³
Step 2: Find the volume of the cylinder.
The formula for the volume of a cylinder is V_cylinder = πr²h.
V_cylinder = 3.14 × (12 cm)² × 12 cm
V_cylinder = 3.14 × 144 cm² × 12 cm
V_cylinder ≈ 5428.64 cm³
Step 3: Find the difference in volumes.
Difference = V_sphere - V_cylinder
Difference = 9047.78 cm³ - 5428.64 cm³
Difference ≈ 3619.14 cm³
The difference in volumes between the sphere and the cylinder is approximately 3619.14 cubic cm.
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Find the positive solution, to the nearest tenth, of f(x)
g(x) = -2x + 25.
X≈
Submit
= g(x), where f(x) = 3* - 2 and
The result will be the x value when the difference between the values of f(x) and g(x) is less than 0.1, which will be the positive solution to the nearest tenth of f(x)=g(x).
To find the positive solution, to the nearest tenth, of f(x)=g(x) using Cora's process, the steps are as follows:
Input the initial value of x,if x=0.
Calculate f(x) and g(x):
f(x) = x² - 8 = 0 - 8 = -8
g(x) = 2x - 4 = 0 - 4 = -4
If f(x) is less than g(x), then x should be increased and vice versa.
Increase or decrease x accordingly and calculate the new values of f(x) and g(x).
Keep repeating steps 3 and 4 until the difference between the values of f(x) and g(x) is less than 0.1.
Hence, the result will be the x value when the difference between the values of f(x) and g(x) is less than 0.1, which will be the positive solution to the nearest tenth of f(x)=g(x).
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Cora is using successive approximations to estimate a positive solution to f(x) = g(x), where f(x)=x2 - 8 and g(x)=2x - 4. The table shows her results for different input values of x. Use Cora's process to find the positive solution, to the nearest tenth, of f(x) = g(x)
Assume that Jocoro Provincial Park occupies an area modeled by the domain D. This domain is bordered by the coordinate axes and the lines y = 60 and y = 180 - 2x (where units are in kilometers). Futhermore, assume that snow depth measurements (in meters) were taken over the park on April 15 and that the depth measurements are modeled by the function d(x, y) = -0.024x + 0,012y + 1.2. Estimate the volume of the snowpack in the park in cubic meters. (Give your answer as a whole or exact number.) V= ____billion m
The estimated volume of the snowpack in the park is approximately 1.94 billion cubic meters.
To estimate the volume of the snowpack in the park, we need to calculate a double integral of the function d(x, y) over the domain D:
V = ∬_D d(x, y) dA
We can evaluate this integral by using iterated integrals. First, we integrate with respect to x over the interval [0, 30] (since the line y = 180 - 2x intersects the x-axis at x = 90):
V = ∫_0^30 (∫_0^(180-2x) (-0.024x + 0.012y + 1.2) dy) dx
Simplifying the inner integral:
V = ∫_0^30 [-0.024xy + 0.006y^2 + 1.2y]_0^(180-2x) dx
V = ∫_0^30 (-0.432x^2 + 21.6x - 5832) dx
Simplifying the integral:
V = [-0.144x^3 + 10.8x^2 - 5832x]_0^30
V = -0.144(30)^3 + 10.8(30)^2 - 5832(30)
V = 1.942592 billion cubic meters (rounded to nine decimal places)
Therefore, the estimated volume of the snowpack in the park is approximately 1.94 billion cubic meters.
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PLEASE ANSWER PLEASE PLEASE DUE IN 8 MINS PLEASE
“The window has the shape of a kite. How many square meters of glass were used to make the window?”
The area of glass value is 0.18 square meters.
The longer diagonal of the kite-shaped window has a measure of 25 cm + 35 cm = 60 cm.
The shorter diagonal has a measure of 30 cm + 30 cm = 60 cm as well.
To find the area of the window, we can use the formula -
Area = (1/2) × d1 × d2
where d1 and d2 are the lengths of the longer and shorter diagonals, respectively.
Substituting the values, we get -
Area = (1/2) × 60 cm × 60 cm
Area = 1800 square cm
However, the question asks for the area in square meters, so we need to convert square centimeters to square meters by dividing by 10,000 -
Area = 1800 / 10,000 square meters
Area = 0.18 square meters
Therefore, the area of glass value is 0.18 square meters.
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If November 30 falls on a Sunday, then December 25 of that same year falls on which day of the week? (November has 30 days)
Step-by-step explanation:
Three weeks would be the 21st and would be Sunday too, then
22 Mon
23 Tues
24 Wed
25 Thur
Let (x) = -x^4 -8x^3 +6x - 2. Find the open intervals on which is concave up (down). Then determine the x-coordinates of all inflection points a f.
The x-coordinates of all inflection points a f of the function[tex]f(x) = -x^4 - 8x^3 + 6x - 2[/tex]are (-4, f(-4)) and (0, f(0)).
To find the intervals of concavity and the inflection points of the function[tex]f(x) = -x^4 - 8x^3 + 6x - 2,[/tex] we need to find the second derivative and analyze its sign.
First, we find the first derivative:
[tex]f'(x) = -4x^3 - 24x^2 + 6[/tex]
Then, we find the second derivative:
[tex]f''(x) = -12x^2 - 48x[/tex]
To determine the intervals of concavity, we need to find where f''(x) is positive or negative.
[tex]f''(x) = -12x^2 - 48x = -12x(x + 4)[/tex]
f''(x) is negative for x < -4 and x > 0, and positive for -4 < x < 0.
Therefore, the function f(x) is concave down on the intervals (-∞, -4) and (0, ∞), and concave up on the interval (-4, 0).
To find the inflection points, we need to find where the concavity changes. This occurs at x = -4 and x = 0.
At x = -4, the function changes from concave down to concave up. Therefore, (-4, f(-4)) is an inflection point.
At x = 0, the function changes from concave up to concave down. Therefore, (0, f(0)) is also an inflection point.
Thus, the inflection points of f(x) are (-4, f(-4)) and (0, f(0)).
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To answer questions 4 - 6.
A new school opened with 225 students in 2021 and plans to increase by 13. 3% per year
until they reach full capacity.
Is this situation exponential growth or decay?
4.
5.
Write an equation that models the population of the school, P, after x years since
the opening of the school in 2021
The situation provided is exponential growth and the equation is
p = 225 * 1.133ˣ
How to determine the situationThis scenario represents a significant improvement as the number of students increases each year.
The basic approach to incremental growth is:
[tex]P = P_{0} * (1 + r)^t[/tex]
where:
P. = initial population
r = increase in decimal form
t = time in years
Here
P₀ = 225 (initial population in 2021).
r = 13.3% = 0.133 (growth rate as decimal) .
t = x (time in years from the opening of the school in 2021)
Substituting these values in the formula we get:
[tex]p = 225 * (1 + 0.133)^x[/tex]
Simplifying further, we get:
p = 225 * 1.133ˣ
This is the equation that predicts school population x years after the school opens in 2021
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Chris buys 19 raffle tickets. A total of 250 tickets were sold. Find the probability that Chris does not win the prize
Answer:For 19 to 250 odds against winning;
Probability of:
Winning = (0.9294) or 92.9368%
Losing = (0.0706) or 7.0632%
"Odds for" winning: 250:19
"Odds against" winning: 19:250
Step-by-step explanation:
A pack of 24 crayons costs the manufacturer $0.05 to make and is sold to the stores for $0.25. the stores sell the crayons for $0.50 during back to school week.
1.an equation that represents the mark up cost by the manufacturer is
a.p(c)=2c
b.p(c)=5c
c.p(c)=10c
2.an equation that represents the store mark up cost is
a.s(p)=2p
b.s(p)=5p
c.s(p)=10p
3.a composition of these two functions is
a.s(p(c))=2c
b.s(p(c))=10c
c.s(p(c))=5c
4.it represents
a.the total markup from cost to sales price
b.how much the store profits from the sale
c.how much money the manufacturer makes
a. s(p)=2p b. p(c)=5c c. s(p(c))=5c a. The total markup from cost to sales price.
How are the mark-up costs and profits determined in the pricing of the crayons?The equation that represents the mark-up cost by the manufacturer is c. p(c) = 10c. This equation implies that the manufacturer adds a mark-up of 10 times the cost to determine the selling price of the crayons.The equation that represents the store mark-up cost is b. s(p) = 5p. This equation implies that the store adds a mark-up of 5 times the cost price (or the price they purchase from the manufacturer) to determine the selling price during back-to-school week.The composition of these two functions is c. s(p(c)) = 5c. This equation represents that the store applies their mark-up (5 times the cost) to the manufacturer's selling price (10 times the cost) to determine the final selling price of the crayons.It represents a. the total mark-up from cost to sales price. This composition equation shows how both the manufacturer and the store contribute to the mark-up, resulting in the final selling price of the crayons. It accounts for the mark-up at each stage of the distribution process, from the manufacturer to the store.Learn more about manufacturer
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An insulated collar is made to cover a pipe. Find the volume of the material used to make the collar. Let r = 3 inches, R = 5 inches, and h = 21 inches. Use 3. 14 for p, and round to the nearest hundredth
The volume of the material used to make the insulated collar is 1060.56 cubic inches.
The volume of the material used to make the insulated collar can be determined as follows.
1. Identify the given dimensions:
inner radius (r) = 3 inches,
outer radius (R) = 5 inches, and
height (h) = 21 inches.
2. Use the formula for the volume of a cylinder:
V = πr^2h.
3. Calculate the volume of the outer cylinder with radius R:
V_outer = πR^2h = 3.14 * (5^2) * 21 ≈ 1653.3 cubic inches.
4. Calculate the volume of the inner cylinder with radius r:
V_inner = πr^2h = 3.14 * (3^2) * 21 ≈ 592.74 cubic inches.
5. Subtract the volume of the inner cylinder from the volume of the outer cylinder to find the volume of the material used:
V_material = V_outer - V_inner ≈ 1653.3 - 592.74 ≈ 1060.56 cubic inches.
The volume of the material is approximately 1060.56 cubic inches, rounded to the nearest hundredth.
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MARKING BRAINLEIST IF CORRECT ASAP
Ralph has a cylindrical container of parmesan cheese. The diameter of the base of the container is 2. 75 inches, and the height is 6 inches. What is the area of a horizontal cross section of the cylinder to the nearest tenth of a square inch? Use 3. 14 for π
The area of a horizontal cross-section of the cylinder whose diameter is 2.75 inches and height is 6 inches is 5.9 inch².
Diameter of the base of the container = 2.75 inch
Height of the cylinder = 6 inch
Area of a horizontal cross-section of the cylinder = πr²
Here, r = radius of the container
Radius = Diameter/2
Radius = 2.75/2
Radius = 1.375
Area of the horizontal cross-section of the cylinder = 3.14 × 1.375 × 1.375
Area = 5.9365625
Area of the horizontal cross- section of the cylinder to the nearest tenth is 5.9
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In the mid-nineteenth century, explorers used the boiling point of water to estimate altitude. The boiling temperature of water T (in °F) can be approximated by the model T = -1. 83a + 212, where a is the altitude in thousands of feet. Two campers hiking in Colorado boil water for tea. If the water boils at 196°F, approximate the altitude of the campers. Give the result to the nearest hundred feet
The Colorado hikers are at an altitude of 8753.1694 feet.
Here we have been given the equation T = -1. 83a + 212.
Here, T is the boiling point in Fahrenheit of water, while a is the altitude of the place.
We know that the campers in hiing in Colorado boil water for ea. The water boils at a temperature of 196°F, we need to find the altitude.
Here we are going to clearly take T = 196°F
Substituting the value in the above equation will give us
196 = - 1.83a + 212
Taking the variable to the Right Hand Side will give us
196 + 1.83a = 212
Taking 196 to LHS to separate the constant and variable will give us
1.83a = 212 - 196
Solving LHS gives us
1.83a = 16
Taking 1.83 to the other side will give us
a = 16/1.83
or, a = 8.7431694 thousands feet
= 8753.1694 feet
Hence, the Colorado hikers are at an altitude of 8753.1694 feet.
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Consider the graph of the linear function h(x) = –x + 5. Which could you change to move the graph down 3 units?
the value of b to –3
the value of m to –3
the value of b to 2
the value of m to 2
The change to move the graph down 3 units is given as follows:
the value of b to 2.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0. On a graph, it is the value of y when the graph of the function crosses the y-axis.The function in this problem is given as follows:
y = -x + 5.
Moving the graph down 3 units, we subtract by three, hence:
y = -x + 5 - 3
y = -x + 2.
Meaning that the value of b is of b = 2.
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Find the measure of ZB b 60⁰
Answer: b = 30°
Step-by-step explanation:
The little square represents a 90-degree angle.
90° - 60° = b
30° = b
b = 30°
5-|p+6|=-8
2 answers
NOT 19
The perimeter of an isosceles triangle is 51 in. One side is 18 in and another is 15 in. What is the length of the missing side?
The length of the missing side is equal to 18 inches.
How to calculate the perimeter of this triangle?In Mathematics and Geometry, the perimeter of a triangle can be calculated by using this mathematical equation:
P = a + b + c
Where:
P represents the perimeter of a triangle.a, b, and c represents the side lengths of a triangle.By substituting the given parameters or dimensions into the formula for the perimeter of a triangle, we have the following;
51 = 18 + 15 + x
51 = 33 + x
x = 51 - 33
x = 18 inches.
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What is the probability of drawing a diamond or a spade card from a standard deck of cards and rolling a 2 on a six-sided die?
10. 7%
25%
8. 3%
04. 2%
The probability of drawing a diamond or a spade card from a standard deck of cards and rolling a 2 on a six-sided die is 8.33%
To calculate the probability of drawing a diamond or a spade card from a standard deck of cards, we need to find the total number of diamond and spade cards in the deck. There are 13 cards in each suit, so there are 26 diamond and spade cards in total. The deck has 52 cards in total, so the probability of drawing a diamond or a spade card is:
P(diamond or spade) = 26/52 = 1/2 = 50%
To calculate the probability of rolling a 2 on a six-sided die, we need to find the total number of possible outcomes, which is 6 (since there are 6 sides on the die), and the number of favorable outcomes, which is 1 (since there is only one face with a 2 on it). Therefore, the probability of rolling a 2 on a six-sided die is:
P(rolling a 2) = 1/6 = 16.67%
To find the probability of both events happening together (drawing a diamond or a spade card and rolling a 2 on a six-sided die), we multiply the probabilities of each event:
P(diamond or spade AND rolling a 2) = P(diamond or spade) * P(rolling a 2)
= 50% * 16.67%
= 8.33%
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Use two unit multipliers to convert
54 square feet to square yards.
When we convert the given 54 square feet into square yards we get 6 square yards by using two unit multipliers to convert.
A fraction that equals 1 and is used to convert one set of units to another one is a unit multiplier. The fraction numerator and denominator contain equivalent measurements in different units.
We need to convert the 54 square feet to square yards by using two unit multipliers. by using the two-unit multipliers
given standards :
1 yard = 3 feet
1 square yard = 9 square feet
To convert the 54 square feet to square yards we need to multiply 54 square feet by two unit multipliers which are (1 yard / 3 feet) and (1 yard / 3 feet). Then the equation can be written as:
= 54 square feet × (1 yard / 3 feet) × (1 yard / 3 feet)
= 6 square yards
Therefore, 54 square feet is equal to 6 square yards.
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The dean of students at a large college is interested in learning about their opinions regarding the percentage of
first-year students who should be given parking privileges in the main lot. He sends out an email survey to all
students about this issue. A large number of first-year students reply but very few sophomores, juniors, and seniors
reply. Based on the responses he receives, he constructs a 90% confidence interval for the true proportion of
students who believe first-year students should be given parking privileges in the main lot to be (0. 71, 0. 79). Which
of the following may have an impact on the confidence interval, but is not accounted for by the margin of error?
O response bias
O nonresponse bias
O sampling variation
O undercoverage bias
Mark this and retum
Save and Exit
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The dean of students at a large college is interested in learning about their opinions regarding the percentage of students who are satisfied with their academic experience. This is an important question for the dean to consider, as it can help them identify areas for improvement and ensure that they are meeting the needs of their students.
To gather this information, the dean may choose to conduct a survey or hold focus groups with students to hear their feedback. They may also review data on student retention rates and academic performance to get a sense of how satisfied students are with their experience at the college.
Once the dean has gathered this information, they can use it to make informed decisions about how to improve the academic experience for their students. This may involve investing in new programs or resources to better support students, or making changes to existing programs based on feedback from students.
Ultimately, by taking the time to gather and listen to student opinions about their academic experience, the dean can create a more student-centered learning environment that meets the needs and expectations of their diverse student population.
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What is the lateral area of the cone to the nearest whole number? The figure is not drawn to scale.
*
Captionless Image
34311 m^2
18918 m^2
15394 m^2
28742 m^2
The lateral area of the cone is 18918 m²
How to find the lateral area of the cone?
The lateral area of the cone can be determined using the formula:
A[tex]_{L}[/tex] = πrL
Where is the r is the radius of circular base of the cone and L is the slant height
In this case:
r = 140/2 = 70m
L = √(50² + 70²) (Pythagoras theorem)
L = 10√74 m
A[tex]_{L}[/tex] = π * 70 * 10√74
A[tex]_{L}[/tex] = 18918 m²
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Which expression had a value less than 1
Step-by-step explanation:
[tex] - \infty \: and \: 0[/tex]
or
[tex]x \leqslant 1[/tex]
Two sisters, working together can clean the house in 3 hours. The older sister works 3 times faster than the younger sister when cleaning the house. How long will it take the younger sister to finish the same job by herself? Type just the number don't include words
The time taken by the younger sister to finish the same work by herself is 12 hours.
To solve the problem of how long it will take the younger sister to finish the job by herself, let's use the following terms:
1. Older sister's work rate = O
2. Younger sister's work rate = Y
3. Time taken by the younger sister alone = T
Given that the older sister works 3 times faster than the younger sister, we have: O = 3Y.
Also, the sisters together can finish the job in 3 hours. Therefore, their combined work rate is equal to completing 1/3 of the job per hour. So,
O+Y=1/3.
Now, we can substitute O with 3Y: 3Y+Y=1/3. Combine the terms and simplify:
4Y=1/3
Now, solve for Y:
Y=1/12
Since Y is the work rate of the younger sister, to find the time it takes for her to complete the job alone (T), we can use the following formula:
Work rate × Time = 1 job.
So, Y × T = 1.
Substitute Y with 1/12:
[tex]\frac{1}{12} \times T=1[/tex]
Now, solve for T:
T = 12.
Therefore, it will take the younger sister 12 hours to finish the job by herself.
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A circular flower garden surrounds a sculpture on a square base as show being 6x and 4x. What is an expression for the area of the flower garden
A circular flower garden surrounds a sculpture on a square base as show being 6x and 4x. The expression for the area of the flower garden is π(26x - 12√2x).
Find the expression for the area of the flower garden, we need to first find the area of the square base.
The area of a square is calculated by multiplying the length of one side by itself. In this case, the length of one side is 4x, so the area of the square base is (4x)^2 = 16x^2.
Next, we need to find the area of the circular flower garden that surrounds the square base.
Since the flower garden is circular, we use the formula for the area of a circle, which is A = πr^2, where A is the area and r is the radius.
The radius of the flower garden is the distance from the center of the circle to any point on the circumference.
Since the flower garden surrounds the square base, we can find the radius by subtracting the side length of the square base from the diameter of the circle.
The diameter of the circle is equal to the diagonal of the square base, which is √(6x)^2 + (6x)^2 = √72x^2 = 6√2x. Therefore, the radius of the flower garden is (6√2x - 4x)/2 = (3√2x - 2x).
Now we can substitute this expression for the radius into the formula for the area of a circle to find the area of the flower garden: A = π(3√2x - 2x)^2 = π(18x - 12√2x + 8x) = π(26x - 12√2x).
Therefore, the expression for the area of the flower garden is π(26x - 12√2x).
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Susan is a college student with two part-time jobs. She earns $10 per hour tutoring
elementary students in math. She earns $15 per hour cleaning in the library. Her goal is
to earn at least $240 per week, but because of college, she does not work more than
20 hours each week.
Which combinations allow Susan to work no more than 20 hours in one week and earn
at least $2402
Select the three correct combinations.
The required inequalities are h + l ≤ 20, 10h + 15l ≥ 240 and 20h + 25l ≥ 440
Given, for tutoring elementary students in math Susan earns $10 per hour. She earns $15 per hour for cleaning in the library.
Let h be the number of hours Susan works in one week tutoring elementary students.
Let l be the number of hours Susan works in one week cleaning the library.
Given that each week Susan cannot work more than 20 hours.
So, h + l ≤ 20 ....(1)
Susan's total earnings must be at least $240 per week.
10h + 15l ≥ 240 ...(2)
Multiplying equation (1) by 10
10h + 10l ≤ 200 ...(3)
Adding equations (2) and (3)
20h + 25l ≥ 440
Thus, the three required inequalities are h + l ≤ 20, 10h + 15l ≥ 240 and 20h + 25l ≥ 440
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In triangle ABC, segment DE is parallel to segment AC and thus, triangle BED is similar to triangle BCA.
A. ) use the ratios of the lengths of corresponding sides to create a proportion
B. ) Solve for x
A. The proportion we can set up is: c/a = d/b, and B. x = (c * b) / a. This gives us the value of x in terms of the lengths of the other segments.
A) The corresponding sides in similar triangles are proportional, so we can use this fact to set up a proportion between the sides of triangles BED and BCA. Let's call the length of segment BC "a", the length of segment AC "b", the length of segment BE "c", and the length of segment DE "d".
The proportion we can set up is:
c/a = d/b
This is because we know that triangle BED is similar to triangle BCA, so the ratio of the lengths of their corresponding sides must be the same.
B) We can now use the proportion to solve for x, which is the length of segment DE. We can start by cross-multiplying the proportion:
c * b = d * a
Then, we can isolate for x by dividing both sides by the coefficient of x:
x = (c * b) / a
This gives us the value of x in terms of the lengths of the other segments.
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The mean of a continuous uniform distribution is simply the average of the upper and lower limits of the interval on which the distribution is defined. true or false
True. In a continuous uniform distribution, all values within a specified interval are equally likely to occur. The mean or expected value of this distribution can be found by taking the average of the upper and lower limits of the interval.
This can be represented mathematically as (a+b)/2, where a and b are the lower and upper limits of the interval. For example, if we have a continuous uniform distribution on the interval [0,10], the mean value would be (0+10)/2 = 5.
This means that on average, we would expect a randomly selected value from this distribution to be around 5. It's important to note that the mean of a continuous uniform distribution is not affected by the shape or spread of the distribution, as all values have an equal chance of occurring.
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