By using concept of interior angle we find the value of X is -7.14 degrees.
The above problem involves finding the value of x in a triangle with two known angles measuring 78° and 152°.
The sum of the interior angles of any triangle is always 180°, so we can use this fact to set up an equation involving the third angle, which is given as 7x +3 degrees.
To solve for x, we first simplify the equation by combining the known angles:
78° + 152° + (7x + 3)° = 180°
Next, we can simplify by adding the two known angles:
230° + 7x° = 180°
This simplifies to:
7x° = -50°
Finally, we can solve for x by dividing both sides by 7:
x = [tex]\frac{-50^\circ}{7}$$[/tex]
Therefore, x is approximately -7.14 degrees.
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Color the stars, so it is unlikely impossible to choose a red one.
Determine which two statements contradict each other.
-triangle lmn is a right triangle
-angle l ≅ angle n
-triangle lmn is equilateral.
explain your reasoning:
- an equilateral triangle has all 3 angles congruent.
-triangle lmn must have the right angle at m , not l or n .
-a right triangle cannot also be an isosceles triangle.
-equilateral triangles have 60 degree angles, so none are right.
The two contradictory statements are "triangle LMN is a right triangle" and "triangle LMN is equilateral."
An equilateral triangle has all three sides and angles congruent. Therefore, if triangle LMN is equilateral, all angles in the triangle must be congruent and equal to 60 degrees. However, the statement "triangle LMN is a right triangle" implies the presence of a 90-degree angle, which contradicts the requirement for all angles to be 60 degrees in an equilateral triangle.
Additionally, the statement "angle L ≅ angle N" suggests that angles L and N are congruent. In an equilateral triangle, all angles are congruent, so if angles L and N are congruent, it further supports the claim that triangle LMN is equilateral.
In conclusion, the statement "triangle LMN is a right triangle" contradicts the statement "triangle LMN is equilateral" because a right triangle cannot be equilateral.
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Which is the closest to the volume of the solid figure formed from the net?
I'm sorry, but I cannot answer your question without a net or a description of the solid figure. Can you please provide more information or context?
Mario's Pizzeria offers 2 types of crust and 6 different kinds of toppings. They assigned each side of the coin to a type of pizza crust and each number on the number cube to a topping. If Mario's makes a one-topping pizza, what is the probability that the coin flipped and the cube rolled will describe the pizza crust and topping combination they just made? Express the answer as a decimal rounded to the nearest thousandth
To determine the probability of the coin flip and the cube roll describing the pizza crust and topping combination made at Mario's Pizzeria, we need to consider the total possible outcomes of these events.
There are 2 types of crust, so the coin has 2 sides (heads for one crust type and tails for the other). For the toppings, there are 6 options, represented by the numbers 1 to 6 on the number cube.
First, we find the total possible outcomes by multiplying the number of crust options (2) by the number of topping options (6):
Total possible outcomes = 2 crust options * 6 topping options = 12 combinations
Since there is only one specific combination that Mario's Pizzeria just made, the probability of the coin flip and the cube roll describing this specific combination is:
Probability = 1 (specific combination) / 12 (total possible outcomes)
To express this as a decimal rounded to the nearest thousandth, divide 1 by 12:
Probability ≈ 0.083
So, the probability that the coin flipped and the cube rolled will describe the pizza crust and topping combination that Mario's Pizzeria just made is approximately 0.083, or 8.3%.
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The rent for an apartment was $6,600 per year in 2012. If the rent increased at a rate of 4% each year thereafter, use an exponential equation to find the rent of the apartment in 2017. (Write your answer in dollars, such as $XX. XX)
The rent for the apartment using exponential equation in 2017 was $8,029.91.
To find the rent of the apartment in 2017, we will use an exponential equation. An exponential equation is a mathematical expression where a variable is raised to a power, often used to model growth or decay. In this case, we will model the growth of the rent over time.
1. Identify the initial rent, the growth rate, and the number of years that have passed since 2012.
Initial rent (A0): $6,600
Growth rate (r): 4% = 0.04
Number of years (t): 2017 - 2012 = 5
2. Write the exponential equation for the rent increase:
At = A0 * (1 + r)^t
3. Plug in the given values and calculate the rent in 2017:
At = $6,600 * (1 + 0.04)^5
4. Calculate the rent:
At = $6,600 * (1.04)^5
At = $6,600 * 1.2166529
At = $8,029.91
The rent for the apartment in 2017 was $8,029.91. This was calculated using an exponential equation, which allowed us to account for the 4% annual increase in rent over the 5 years since 2012.
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Square $ABCD$ has side length 7. What is the length of the diagonal $AC?$ (its a square also)
The length of the diagonal AC in square ABCD is approximately 9.899 units.
To find the length of the diagonal AC, we can use the Pythagorean theorem, which states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
In our case, since ABCD is a square, angle ABC is a right angle. Therefore, triangle ABC is a right-angled triangle with sides AB and BC both equal to 7 units. We can apply the Pythagorean theorem to find the length of diagonal AC (the hypotenuse):
AC² = AB² + BC²
Plugging in the side lengths:
AC² = 7² + 7² = 49 + 49 = 98
Now, we take the square root of both sides to find the length of AC:
AC = √98 ≈ 9.899
So, the length of the diagonal AC in square ABCD is approximately 9.899 units.
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Ms. Griffin has 0. 8 liters of hot tea and 4 teacups. She will divide the tea evenly among the cups. Which model represents 0. 8 divide by 4
The model that represents Ms. Griffin's situation is 0.8 divided by 4, which equals 0.2 liters of hot tea in each teacup.
To find the amount of tea in each teacup, you need to divide the total amount of tea (0.8 liters) by the number of teacups (4). The model for this is 0.8 ÷ 4. Follow these steps:
1. Divide 0.8 by 4:
0.8 ÷ 4 = 0.2
2. Interpret the result:
Each teacup will have 0.2 liters of hot tea.
So, the model that represents Ms. Griffin's situation is 0.8 divided by 4, which equals 0.2 liters of hot tea in each teacup.
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Arturo has completed 27 math problems, which is 75% of the assignment. How many problems total did he have to complete?
I need help!
The total number of problems he solved is 36 if after completion of 27 problems he has completed 75% of the assignments.
Percentage of completion = 75 % of the work
The percentage can be converted to decimal by dividing the percentage by 100.
Thus, the part that has been completed = 75% = 0.75 of the work
The number of questions done = 27
Let the total number of questions be x
Thus, 75% of x is given as 27
75% of x = 27
0.75 * x = 27
0.75x = 27
x = 27/0.75
x = 36
Thus, the total number of questions is 36.
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Enter the y coordinate of the solution to this system of equations. 3x+y=-2 x-2y=4
The y coordinate of the solution to this system of equations is -2
Calculating the y coordinate of the solution to this system of equations.From the question, we have the following parameters that can be used in our computation:
3x+y=-2 x-2y=4
Express properly
So, we have
3x + y = -2
x - 2y = 4
Multiply the second equation by -3
so, we have the following representation
3x + y = -2
-3x + 6y = -12
Add the equations to eliminate x
7y = -14
Divide both sides by 7
y = -2
Hence, the value of y is -2
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If a and b, then c. given: the if-then statement's reverse isalso correct. if a is true, b is true, what is c?
If a and b, then c means that if both a and b are true, then c must also be true. This is an example of a conditional statement, where the truth of one proposition (c) is dependent on the truth of the other two propositions (a and b).
Now, given that the reverse of the if-then statement is also correct, we can conclude that if b is true, then a is also true. This means that both a and b are true. Therefore, according to the original statement, c must also be true.
In other words, if a and b are both true, then c must also be true. This is because the conditional statement "if a and b, then c" holds true in this scenario. Therefore, we can conclude that the value of c is true.
Overall, understanding the logic behind conditional statements and their reverses can help us make logical conclusions about the truth of propositions based on the truth of other propositions.
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(1 point) Assuming that y is a function of x, differentiate x^6y^9 with respect to x. dy Use D for dy/dx in your answer. d/dx (x^6y^9) =
To differentiate x^6y^9 with respect to x, we will use the product rule. The product rule states that the derivative of a product of two functions is the derivative of the first function multiplied with the second function, plus the first function multiplied with the derivative of the second function.
Step 1: Identify the functions
Function 1 (u): x^6
Function 2 (v): y^9
Step 2: Find the derivatives
u' (du/dx): Differentiate x^6 with respect to x, which gives 6x^5
v' (dv/dx): Differentiate y^9 with respect to x, which gives 9y^8 * (dy/dx) = 9y^8D (since D = dy/dx)
Step 3: Apply the product rule
d/dx (x^6y^9) = u'v + uv'
= (6x^5)(y^9) + (x^6)(9y^8D)
= 6x^5y^9 + 9x^6y^8D
So, the derivative of x^6y^9 with respect to x is 6x^5y^9 + 9x^6y^8D.
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Identify all the lines on the graph with unit rates that are less than 2 and greater than the unit rate of the relationship in the table. X y
7 8
14 16
21 24
The only line on the graph with a unit rate less than 2 is the horizontal line passing through y=8.
To identify the unit rates on the graph, we need to find the slope of the line connecting each pair of points. We can use the formula:
slope = (change in y) / (change in x)
For example, the slope between the first two points (7,8) and (14,16) is:
slope = (16-8) / (14-7) = 8/7
Similarly, we can find the slopes for the other pairs of points:
- between (7,8) and (21,24): slope = (24-8) / (21-7) = 16/14 = 8/7
- between (14,16) and (21,24): slope = (24-16) / (21-14) = 8/7
Notice that all three slopes are equal, which means the graph represents a line with a constant unit rate of 8/7.
To find lines with unit rates less than 2, we need to look for steeper lines on the graph. Any line with a slope greater than 2/8 (or 1/4) will have a unit rate greater than 2.
One way to see this is to note that a slope of 2/8 means that for every 2 units of increase in y, there is 8 units of increase in x. This is equivalent to saying that the unit rate is 2/8 = 1/4. If the slope is greater than 2/8, then the unit rate is greater than 1/4, and therefore greater than 2.
Looking at the graph, we can see that the steepest line has a slope of 2/3, which means it has a unit rate of 2/3. Therefore, any line with a slope greater than 2/3 will have a unit rate greater than 2, and any line with a slope less than 2/3 will have a unit rate less than 2.
To summarize:
- The graph represents a line with a constant unit rate of 8/7.
- Any line with a slope greater than 2/3 has a unit rate greater than 2.
- Any line with a slope less than 2/3 has a unit rate less than 2.
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Find the equation of the parabola described. Find the two points that define the latus rectum, and graph the equation.
Vertex at (0,0); axis of symmetry the y-axis; containing the point (6,4).
What is the equation of the parabola? Find the two points that define the latus rectum.
The equation of the parabola is:
x = ay²The two points that define the latus rectum are (±9/64, 4).
How to find the equation of the parabola?The equation of the parabola with vertex at (0,0) and axis of symmetry the y-axis can be written in the form x = ay^2, where a is a constant. Since the parabola contains the point (6,4), we can substitute these values to solve for a:
6 = a(4²)
6 = 16a
a = 6/16 = 3/8
So the equation of the parabola is x = (3/8)y².
To find the two points that define the latus rectum, we need to determine the focal length, which is the distance from the vertex to the focus.
Since the axis of symmetry is the y-axis, the focus is located at (0, f), where f is the focal length. We can use the formula f = a/4 to find f:
f = a/4 = (3/8)/4 = 3/32
So the focus is located at (0, 3/32). The two points that define the latus rectum are the intersections of the directrix, which is a horizontal line located at a distance of f below the vertex, with the parabola. The directrix is located at y = -3/32.
To find the intersections, we can substitute y = ±(16/3)x^(1/2) into the equation of the directrix:
y = -3/32
±(16/3)[tex]x^(^1^/^2^)[/tex]= -3/32
x = 9/64
So the two points that define the latus rectum are (±9/64, 4).
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The circle at each end of the court that surrounds the free throw line is the same size as the jump ball circle. (In other words, they have the same radius. ) What is the area of the rectangle (called the lane) whose length is 19 feet and whose width is the free throw line?
So the area of the rectangle (or lane) whose length is 19 feet and whose width is the free throw line, together with the two circles at each end of the court that surround the free throw line, is approximately 450.39 square feet.
What is the length of the rectangle and how many free throw line square feet?Since the circle at each end of the court that surrounds the free throw line is the same size as the jump ball circle, they both have the same radius. Let's call this radius "r".
The diameter of the circle is equal to the width of the lane, which is the same as the width of the free throw line. Therefore, the diameter of the circle is also 12 feet (the width of the free throw line is always 12 feet).
We know that the area of a circle is given by the formula A = πr^2, so the area of each circle is πr^2.
The rectangle (or lane) has a length of 19 feet and a width of 12 feet. Therefore, its area is simply the product of its length and width, which is:
A = 19 feet * 12 feet
A = 228 square feet
Since there are two circles, the total area of the circles is 2πr^2.
We know that the diameter of the circle is equal to the width of the lane, which is 12 feet. Therefore, the radius is half of the diameter, or:
r = 12 feet / 2
r = 6 feet
Now we can calculate the area of the circles:
A = 2πr^2
A = 2π(6 feet)^2
A = 72π square feet
Therefore, the total area of the rectangle and circles (or lane and circles) is:
A_total = A_rectangle + A_circles
A_total = 228 square feet + 72π square feet
A_total ≈ 450.39 square feet
So the area of the rectangle (or lane) whose length is 19 feet and whose width is the free throw line, together with the two circles at each end of the court that surround the free throw line, is approximately 450.39 square feet.
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Verify that the function
f(x) = -4x^2 + 12x - 4 In x attains
an absolute maximum and absolute minimum
on [1/2, 2].
Find the absolute maximum and minimum
values.
The function f(x) = -4x² + 12x - 4 attains an absolute maximum of 3 at x = 1/2 and an absolute minimum of -8 at x = 2 on the interval [1/2, 2].
To help you verify and find the absolute maximum and minimum values of the function f(x) = -4x² + 12x - 4 on the interval [1/2, 2].
Step 1: Find the critical points by taking the derivative of f(x) and setting it to 0.
f'(x) = -8x + 12
Step 2: Solve f'(x) = 0 to find critical points.
-8x + 12 = 0
x = 3/2
Step 3: Evaluate the function f(x) at the critical point and the interval's endpoints.
f(1/2) = -4(1/2)^2 + 12(1/2) - 4(1/2) = 3
f(3/2) = -4(3/2)^2 + 12(3/2) - 4(3/2) = 1
f(2) = -4(2)^2 + 12(2) - 4(2) = -8
Step 4: Compare the function values and determine the absolute maximum and minimum values.
The absolute maximum value is 3 at x = 1/2.
The absolute minimum value is -8 at x = 2.
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What is the electron arrangement of an Al³+ ion?
A. 2,8
B. 2,3
C. 2, 8, 3
D. 2, 8, 8
Correct option is A)
The arrangement of electrons in different energy levels around a nucleus is called electronic configuration. The periodicity in properties of elements in any group is due to repetition in the same valence shell electronic configuration after a certain gap of atomic numbers such as 2, 8, 8, 18, 18, 32.
The atomic number of Al is 13 and its electronic configuration is 2, 8, 3. So, the electronic configuration of [tex]\text{Al}^3+[/tex] is 2,8.
Please help it due soon and the answer is meant to be in kg
Answer: 20 kg
Step-by-step explanation:
You follow the line of best fit until 50cm
Then you trace across and look at the x-axis.
There you will find that the dog will be 20kg at 50cm using the line of best fit.
they're surprised to see that final stores the value 0.7999999999999999 instead of 0.8. what is the best explanation for that result?
The limited precision of floating-point arithmetic in computers can cause rounding errors, leading to unexpected results such as the value 0.7999999999999999 instead of 0.8. This occurs because certain decimal values cannot be accurately represented in binary form.
This is due to the way floating-point numbers are represented in the computer's memory.
Binary floating-point arithmetic cannot represent every decimal value exactly, so sometimes small rounding errors can occur.
In this case, the value 0.8 cannot be represented exactly in binary floating-point format, so the closest approximation is used, resulting in a slightly different value.
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Find the inverse for each relation: 4 points each
1. {(1,‐2), (2, 3),(3, ‐3),(4, 2)}
2. {(4,2),(5,1),(6,0),(7,‐1)}
Find an equation for the inverse for each of the following relations.
3. Y=-8x+3
4. Y=2/3x-5
5. Y=1/2x+10
6. Y=(x-3)^2
Verify that f and g are inverse functions.
7. F(x)=5x+2;g(x)=(x-2)/5
8. F(x)=1/2x-7;g(x)=2x+14
The inverse relation is {(‐2,1), (3, 2),(‐3, 3),(2, 4)}, {(2, 4),(1, 5),(0, 6),(‐1, 7)}, the inverse equation is: y = (-x + 3)/8, y = (3/2)x - (15/2), y = (1/2)x + 10,
x = sqrt(y) + 3 or x = -sqrt(y) + 3 and f(g(x)) = g(f(x)) = x, f and g are inverse functions.
1.To find the inverse of the relation, we need to switch the x and y values of each point and solve for y:
{(‐2,1), (3, 2),(‐3, 3),(2, 4)}
2. Following the same process as above:
{(2, 4),(1, 5),(0, 6),(‐1, 7)}
So the inverse relation is {(2, 4),(1, 5),(0, 6),(‐1, 7)}.
3.To find the equation of the inverse, we can solve for x:
y = -8x + 3
x = (-y + 3)/8
So the inverse equation is: y = (-x + 3)/8.
4. Following the same process as above:
y = (2/3)x - 5
x = (3/2)y + 5
So the inverse equation is: y = (3/2)x - (15/2).
5. Following the same process as above:
y = (1/2)x + 10
x = 2(y - 10)
So the inverse equation is: y = (1/2)x + 10.
6.To find the inverse equation, we need to solve for x:
y = (x-3)^2
x = sqrt(y) + 3 or x = -sqrt(y) + 3
So the inverse equation is: x = sqrt(y) + 3 or x = -sqrt(y) + 3.
7,To verify that f and g are inverse functions, we need to show that f(g(x)) = x and g(f(x)) = x.
f(x) = 5x + 2
g(x) = (x-2)/5
f(g(x)) = 5((x-2)/5) + 2 = x - 2 + 2 = x
g(f(x)) = ((5x + 2)-2)/5 = x/5
Since f(g(x)) = g(f(x)) = x, f and g are inverse functions.
8.Following the same process as above:
f(x) = (1/2)x - 7
g(x) = 2x + 14
f(g(x)) = (1/2)(2x+14) - 7 = x
g(f(x)) = 2((1/2)x - 7) + 14 = x
Since f(g(x)) = g(f(x)) = x, f and g are inverse functions.
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I need help with this real quick please
First, using the Pythagorean theorem, we get the hypotenuse = 12.
sin = opposite/hypotenuse = [tex]\frac{6\sqrt{3} }{12} = \frac{\sqrt{3} }{2}[/tex]
cos = adjacent/hypotenuse = [tex]\frac{6}{12} =\frac{1}{2}[/tex]
tan = opposite/adjacent = [tex]\frac{6\sqrt{3} }{6} = \sqrt{3}[/tex]
csc = hypotenuse/opposite = [tex]\frac{12}{6\sqrt{3} } =\frac{2}{\sqrt{3} }[/tex]
sec = hypotenuse/adjacent = [tex]\frac{12}{6} =2[/tex]
cot = adjacent/opposite = [tex]\frac{6}{6\sqrt{3} } = \frac{1}{\sqrt{3} }[/tex]
Amanda wants to add 6732 and 4975 how can Amanda use mental math to add the numbers is Amanda answer correct explain
she can add each number one by one , and whenever she needs to carry numbers over. She can add them to the already existing numbers. she cna check with a calculator
A triangle has base b and height h. The base is doubled. Complete the description of how the height
must change so that the area remains the same. Complete the explanation of the reasoning.
The area of the original triangle is - 0,6 2. The area of the new triangle is
$(201)2 =
-0,1 2. Therefore, the height must be
This must equal the original area,
(select)
When the base of a triangle is doubled, the height must be halved to maintain the same area. This is because the area of a triangle is proportional to the product of its base and height. Area of the new triangle is b₁h₂.
Given that a triangle has base b and height h, and the base is doubled. We need to find how the height must change so that the area remains the same.
The area of the original triangle is (1/2) b₁h₁.
Let's assume that the original base is b₁ and the original height is h₁.
Now, the base is doubled, so the new base is 2b₁.
Using the formula for the area of a triangle, we can find the area of the new triangle as
Area of the new triangle = (1/2) × base × height
= (1/2) × 2b₁ × h₂
= b₁h₂
where h₂ is the new height of the triangle.
Since we want the area of the new triangle to be equal to the area of the original triangle, we can equate the two expressions for the area
b₁h₁ = b₁h₂
Simplifying, we get
h₂ = h₁/2
Therefore, the height must be halved when the base is doubled to keep the area of the triangle constant.
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--The given question is incomplete, the complete question is given
" A triangle has base b and height h. The base is doubled. Complete the description of how the height
must change so that the area remains the same. Complete the explanation of the reasoning.
The area of the original triangle is (1/2) b₁h₁. The area of the new triangle is 1/2 (2b₁)h₂ =_____ This must equal the original area (1/2) b₁h₁. Therefore, the height must be_____"--
For items A and B, us this data set of the price, in dollars, of a milkshake at five different restaurants:4,2,9,14,6. If necessary, round your answer to the nearest tenth of a unit. Decimal answers must round to tenth place.
(I need help, quick!)
Answer:
I'm assuming that A and B are two different items, and you want me to work with the same data set for both items. Here are the calculations:
1. Mean price of milkshake:
To find the mean price of a milkshake, you need to add up all the prices and divide by the total number of prices:
(4 + 2 + 9 + 14 + 6) / 5 = 7
Therefore, the mean price of a milkshake is $7.
2. Median price of milkshake:
To find the median price of a milkshake, you need to put the prices in order from lowest to highest:
2, 4, 6, 9, 14
The median is the middle value. Since there are five values, the middle value is the third value, which is 6.
Therefore, the median price of a milkshake is $6.
3. Mode of price of milkshake:
To find the mode of the price of a milkshake, you need to find the price that appears most frequently in the data set. In this case, there is no price that appears more than once, so there is no mode.
Therefore, there is no mode for the price of a milkshake.
I hope that helps! Let me know if you have any further questions.
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Two factories blow their whistles at exactly the same time. If a man hears the two blasts exactly
4. 2 seconds and 5. 9 seconds after they are blown and the angle between his lines of sight to the two
factories is 40. 8°, how far apart are the factories? Give your result to the nearest meter. (Use the fact
that sound travels at 344 m/sec. )
A) 2903 meters
B) 3263 meters C) 1329 meters D) 1997 meters
The distance between the factories is approximately 1704 meters.
To solve this problem, we can use the Law of Cosines. Let's denote the distance between the man and Factory 1 as x, the distance between the man and Factory 2 as y, and the distance between the factories as z.
Given that the time difference for the man to hear the blasts from Factory 1 and Factory 2 is 4.2 seconds and 5.9 seconds respectively, we can calculate x and y using the speed of sound (344 m/s):
x = 4.2 seconds * 344 m/s = 1444.8 meters
y = 5.9 seconds * 344 m/s = 2030.4 meters
Now, we apply the Law of Cosines using the given angle of 40.8°:
z² = x² + y² - 2xy * cos(40.8°)
z² = 1444.8² + 2030.4² - 2(1444.8)(2030.4) * cos(40.8°)
z² ≈ 2904106.33
Take the square root to find the distance between the factories:
z ≈ √2904106.33 ≈ 1704.14 meters
Rounded to the nearest meter, the distance between the factories is approximately 1704 meters. However, this answer is not included in the given options. There might be an error in the question or the provided options.
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The Nielsen Company surveyed 371 owners of Android phones and found that 200
of them planned to get another Android as their next phone. What is the lower
bound for the 95% confidence interval for the proportion of Android users who plan
to get another Android?
The lower bound for the 95% confidence interval for the proportion of Android users who plan to get another Android phone is 0.463 .
It can be evaluated applying the formula
Lower Bound = Sample Proportion - Z-Score × Standard Error
Here
Sample Proportion
= 200/371 = 0.539
Z-Score = 1.96 (for a 95% confidence interval)
Standard Error = √[(Sample Proportion * (1 - Sample Proportion)) / Sample Size]
= √[(0.539 × (1 - 0.539)) / 371]
= 0.045
Therefore,
Lower Bound = 0.539 - 1.96 × 0.045 = 0.463
A confidence interval is a known as the specified range of values that is prone to contain an unknown population area with a certain degree of confidence.
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PLEASE HELP!!
Solve for measure of angle a.
a = [?]°
Answer:
∠ a = 125°
Step-by-step explanation:
the measure of chord- chord angle a is half the sum of the measures of the arcs intercepted by the angle and its vertical angle, that is
∠ a = [tex]\frac{117+133}{2}[/tex] = [tex]\frac{250}{2}[/tex] = 125°
a,b,c are prime numbers.
Find a,b,c that sastify the equation: a^4 + b^4 + c^4 + 54 = 11abc
The prime number values of a, b and c that satisfy the equation a⁴ + b⁴ + c⁴ + 54 = 11abc are a = 3, b = 2, and c = 5.
Let's consider the equation a⁴ + b⁴ + c⁴ + 54 = 11abc. Due to the fact that the total of four even numbers is also even, the left-hand side is always even. As a result, since 2 is the only even prime, one of the factors a, b, or c must be 2 for 11abc to likewise be even.
Let's examine each instance,
Case 1: a = 2
Substituting a = 2 into the equation, we get,
16 + b⁴ + c⁴ + 54 = 22bc
b⁴ + c⁴ - 22bc + 38 = 0
Since b and c are primes, they must be odd. Let b = 3 and c = 5, we have,
3⁴ + 5⁴ - 2235 + 38 = 0
81 + 625 - 330 + 38 = 0
Case 2: b = 2
Substituting b = 2 into the equation, we get,
a⁴ + 16 + c⁴ + 54 = 22ac
a⁴ + c⁴ - 22ac + 70 = 0
Since a and c are primes, they must be odd. Let a = 3 and c = 5, we have,
3⁴ + 5⁴ - 2235 + 70 = 0
Case 3: c = 2
Substituting c = 2 into the equation, we get,
a⁴ + b⁴ + 16 + 54 = 22ab
a⁴ + b⁴ - 22ab + 70 = 0
However, for any odd number x, x⁴ mod 16 = 1, which means that a⁴ and b⁴ are both corrosponds to 1 mod 16. So, as the conclusion, a = 3, b = 2, and c = 5.
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a researcher is interested in the disappearance of spotted owls from northwestern forests. she studies 10 breeding pairs of spotted owls in cascade national park for one year. the 10 breeding pairs are the: group of answer choices selected sample snowball sample stratified sample target population
The 10 breeding pairs of spotted owls in Cascade National Park studied by the researcher represent a selected sample. So, the correct answer is A)
The 10 breeding pairs of spotted owls represent a selected sample.
A sample is a subset of a larger population that is chosen for research or study purposes. In this case, the researcher is interested in studying the disappearance of spotted owls from northwestern forests, but it would be impractical to study the entire population of spotted owls in the region.
Therefore, the researcher selected a smaller group of 10 breeding pairs in Cascade National Park as a representative sample to study over the course of one year. The selected sample may help the researcher to draw conclusions about the population of spotted owls in the region. So, the correct option is A).
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--The given question is incomplete, the complete question is given
" a researcher is interested in the disappearance of spotted owls from northwestern forests. she studies 10 breeding pairs of spotted owls in cascade national park for one year. the 10 breeding pairs are the: group of answer choices
selected sample
snowball sample
stratified sample
target population"--
A cylinder and a cone have the same volume. The cylinder has radius x
and height y
. The cone has radius 2x
. Find the height of the cone in terms of y
.
The height of the cone in terms of y is h = y / 4.
How to find the volume of a cone and a cylinder?The cylinder and the cone have the same volume. The cylinder has radius x and height y. The cone has radius 2x.
Therefore,
volume of a cylinder = πr²h
where
r = radiush = heightVolume of a cone = 1 / 3 πr²h
where
r = radiush = heightTherefore,
πr²h = 1 / 3 πr²h
πx²y = 1 / 3 π (2x)²h
πx²y = 1 / 3 π 4x² h
multiply both sides by 3
πx²y = π 4x² h
divide both sides by π 4x²
Hence,
h = πx²y / π 4x²
h = y / 4
Therefore, the height of the cone is h = y / 4.
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Express the quantity "14 revolutions per second" in radians per second. Write your answers in terms of pi
14 revolutions per second can be expressed as 28π radians per second.
A radian is an angle whose corresponding arc in a circle is equal to the radius of the circle. A revolution is a full rotation, or a complete, 360-degree turn.
1 revolution per second is expressed as 2π radians per second.
To calculate the number of radians in 14 revolutions per second, we have to multiply 2π by 14.
14 revolutions per second = 14 * 2π
= 28π radians per second
Thus, the answer to the given question comes out to be 28 π radians per second
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