The variance of the given data set is 18603.39.
To find the variance of the given data set {4, 44, 404, 244, 4, 74, 84, 64}, follow these steps:
Step 1: First, we need to find the mean of the data set:
Mean = (4 + 44 + 404 + 244 + 4 + 74 + 84 + 64) / 8 = 120.5
Step 2: Next, we calculate the deviation of each data point from the mean:
(4 - 120.5) = -116.5
(44 - 120.5) = -76.5
(404 - 120.5) = 283.5
(244 - 120.5) = 123.5
(4 - 120.5) = -116.5
(74 - 120.5) = -46.5
(84 - 120.5) = -36.5
(64 - 120.5) = -56.5
Step 3: Now, we square each deviation:
[tex](-116.5)^2 = 13556.25\\(-76.5)^2 = 5852.25\\(283.5)^2 = 80322.25\\(123.5)^2 = 15252.25\\(-116.5)^2 = 13556.25\\(-46.5)^2 = 2162.25 \\(-36.5)^2 = 1332.25\\(-56.5)^2 = 3192.25[/tex](-116.5)^2 = 13556.25
Step 4: We add up all the squared deviations:
13556.25 + 5852.25 + 80322.25 + 15252.25 + 13556.25 + 2162.25 + 1332.25 + 3192.25 = 130223.75
Step 5: We divide the sum of the squared deviations by the number of data points minus 1 to get the variance:
Variance = 130223.75 / 7 = 18603.39 (rounded to two decimal places)
Therefore, the variance of the data set is 18603.39.
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Find a formula for the sum of n terms. Use the formula to find the limit as n = [infinity].
lim ∑ ( 6 + i/n) (2/n)
To find a formula for the sum of n terms, we need to first write out the first few terms of the series and look for a pattern:
n=1: (6+1/1) (2/1) = 14
n=2: (6+1/2) (2/2) + (6+2/2) (2/2) = 16
n=3: (6+1/3) (2/3) + (6+2/3) (2/3) + (6+3/3) (2/3) = 17 1/3
n=4: (6+1/4) (2/4) + (6+2/4) (2/4) + (6+3/4) (2/4) + (6+4/4) (2/4) = 18
From this, we can see that the nth term is given by (6+i/n) (2/n). To find the sum of n terms, we simply add up all of the terms from i=1 to i=n:
∑ (6+i/n) (2/n) = (2/n) ∑ (6+i/n)
Using the formula for the sum of an arithmetic series, we get:
∑ (6+i/n) = n/2 (6 + (6+n)/n)
Substituting this back into our expression for the sum of n terms, we get:
∑ (6+i/n) (2/n) = (2/n) * (n/2) * (6 + (6+n)/n) = 6 + (6+n)/n
Taking the limit as n approaches infinity, we get:
lim (6 + (6+n)/n) = 6 + lim ((6+n)/n) = 6 + 1 = 7
Therefore, the limit of the given series as n approaches infinity is 7.
To find the formula for the sum of n terms, we will use the concept of Riemann sums. Given the expression you provided, it appears that you are trying to compute the limit of the Riemann sum as n approaches infinity, which will give you the integral of the function.
Expression: lim (n→∞) ∑ (6 + i/n) (2/n)
First, let's rewrite the Riemann sum in integral form:
∫(6 + x)dx
Now we need to find the integral of the function and evaluate it over a specific interval. However, you haven't provided the interval, so I'll assume it is [a, b].
∫(6 + x)dx evaluated from a to b will give us the formula for the sum of n terms:
F(x) = 6x + (1/2)x^2
Now, evaluate F(x) over the interval [a, b]:
F(b) - F(a) = [6b + (1/2)b^2] - [6a + (1/2)a^2]
This is the formula for the sum of n terms. To find the limit as n approaches infinity, you will need to provide the specific interval [a, b]. Otherwise, the limit cannot be determined without further information.
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Which conic section is formed when a plane intersects the central axis of a double-napped cone at a 90° angle?
circle
ellipse
hyperbola
parabola
Answer: A
The conic section formed when a plane intersects the central axis of a double-napped cone at a 90° angle is circle.
The conic curve refers to the intersection of right circular cone via the plane. The shape of conic sections are determined by the location of the plane that intersects or divides the angle of intersection and cones.
These can be of four types, parabola, circle, ellipse and hyperbola. The conic curves find application in daily life such as mirrors, satellites, telescopes and other similar devices.
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Answer:circle A.
Step-by-step explanation:
Find the standard matrix for the linear transformation T:R2 + R2 that shears horizontally, with T "((A)) = (-1,67)
The standard matrix for the linear transformation T that shears horizontally is T = [(1 1) (0 1)] [(1 0) (-6 1)] [(1 1) (0 1)]^(-1) = [(1 -6) (0 1)].
To find the standard matrix for the linear transformation T that shears horizontally, we need to determine the matrix that transforms the standard basis vectors e1 and e2 into the shear vectors s1 and s2. The shear vectors are obtained by applying the linear transformation T to the standard basis vectors e1 and e2, respectively.
The shear vector s1 is obtained by shearing the point (1,0) horizontally by -1 unit, and then vertically by 6 units. This gives us s1 = (-1,6). Similarly, the shear vector s2 is obtained by shearing the point (0,1) horizontally by -1 unit and leaving it vertically unchanged. This gives us s2 = (-1,1).
To obtain the standard matrix for the linear transformation T, we need to find the matrix A that transforms the standard basis vectors e1 and e2 into the shear vectors s1 and s2, respectively. We can express A as [s1 s2] [e1 e2]^(-1), where [s1 s2] is a 2x2 matrix whose columns are the shear vectors, and [e1 e2]^(-1) is the inverse of the 2x2 matrix whose columns are the standard basis vectors.
Substituting the values of s1, s2, e1, and e2, we get:
A = [(1 -1) (6 1)] [(1 0) (0 1)]^(-1) = [(1 -1) (6 1)] [(1 0) (0 1)] = [(1 -1) (6 1)]
Therefore, the standard matrix for the linear transformation T that shears horizontally is T = [(1 1) (0 1)] [(1 -1) (6 1)] [(1 1) (0 1)]^(-1) = [(1 -6) (0 1)].
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Pls help me out with this...
Answer:
f(x) = g(x - 9)
Step-by-step explanation:
The transformation from g(x) to f(x) is a translation of 9 units to the right.
A horizontal translation of h units takes place when x is replaced by x - h.
Here, replace x by x - 9.
f(x) = g(x - 9)
Melanie knows she needs 5kg of grass seed to make a square lawn 8m by 8m. Grass seed is sold in 3kg boxes. Melanie wants to make a rectangular lawn by 12m by 14m. She has 4 boxes of grass seed. Has Melanie got enough grass seed to make a lawn by 12m by 14. Show your working out
Melanie does not have enough grass seed to make a lawn.
To find out if Melanie has enough grass seed to make a lawn by 12m by 14m, we need to calculate the area of the lawn and compare it to the amount of grass seed she has.
The area of the square lawn is 8m x 8m = 64 square meters. To cover this area with 5kg of grass seed, we can calculate the amount of grass seed needed per square meter: 5kg / 64 square meters = 0.078125 kg/square meter.
The area of the rectangular lawn is 12m x 14m = 168 square meters. To cover this area with the same amount of grass seed per square meter, we can calculate the total amount of grass seed needed: 168 square meters x 0.078125 kg/square meter = 13.125 kg.
Since Melanie only has 4 boxes of grass seed, which is a total of 12kg, she does not have enough to cover the rectangular lawn. She would need at least 1.125 kg more grass seed to cover the area.
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An aquarium at a zoo is shaped like a cylinder. it has a height of 5 ft and a base radius of 3.5 ft. its being filled with water at a rate of 12 gallons per min. if one cubic foot is about 7.5 gallons, how long will it take to fill
It will take approximately 2 hours and 3 minutes to fill the aquarium.
How to adjust journal entries for partnership?The aquarium at the zoo is in the shape of a cylinder with a height of 5 feet and a base radius of 3.5 feet.
To calculate the volume of the aquarium, we can use the formula for the volume of a cylinder, which is:
V = πr²h
Plugging in the given values we get:
V = π(3.5²)(5) = 192.5π cubic feet
Since one cubic foot is approximately 7.5 gallons, the aquarium has a volume of approximately 1443.75 gallons. If the aquarium is being filled at a rate of 12 gallons per minute, it will take approximately 120.3 minutes, or 2 hours and 3 minutes, to fill the aquarium.
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Find the missing point of the following parallelogram. (2,4) (6,5) (7,5) (5,3)
Answer:
The missing point of this parallelogram is (6, 5).
What is the volume of the composite figure if both the height and the diameter of the cylinder are 3. 5 feet? Give the exact answer and approximate to two decimal places
The exact volume of the composite figure with a cylinder of height and diameter 3.5 feet and a hemisphere on top is 49.92 cubic feet.
How to find the volume?To find the volume of the composite figure, we need to add the volumes of the cylinder and the hemisphere on top of it.
The formula for the volume of a cylinder is:
V_cylinder = π[tex]r^2[/tex]h
where r is the radius of the cylinder and h is its height.
The formula for the volume of a hemisphere is:
V_hemisphere = (2/3)π[tex]r^3[/tex]
where r is the radius of the hemisphere.
In this case, the diameter of the cylinder is given as 3.5 feet, so the radius is half of that, or 1.75 feet. The height of the cylinder is also given as 3.5 feet. Therefore, the volume of the cylinder is:
V_cylinder = π(1.75[tex])^2[/tex](3.5) ≈ 32.67 cubic feet
To find the volume of the hemisphere, we need to first find its radius. Since the diameter of the cylinder is also the diameter of the hemisphere, the radius of the hemisphere is also 1.75 feet. Therefore, the volume of the hemisphere is:
V_hemisphere = (2/3)π(1.75[tex])^3[/tex] ≈ 17.25 cubic feet
Finally, we add the volumes of the cylinder and hemisphere to get the total volume of the composite figure:
V_total = V_cylinder + V_hemisphere
≈ 32.67 + 17.25
= 49.92 cubic feet
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What's the volume of a rectangular prism with a base area of 52 square inches and a height of 14 inches?
The volume of the rectangular prism is 728 cubic inches.
How to find the volume of a rectangular prism?A rectangular prism is a three-dimensional object that has six faces, all of which are rectangles. It is also known as a rectangular parallelepiped. To find the volume of a rectangular prism, we need to know the area of the base and the height of the prism.
The base of a rectangular prism is a rectangle, and its area is given by the formula A = lw, where l is the length and w is the width of the rectangle. Once we know the area of the base, we can find the volume of the prism by multiplying the base area by the height of the prism. The formula for the volume of a rectangular prism is:
V = Bh
where B is the area of the base and h is the height of the prism.
In the given problem, we are given the base area of the rectangular prism as 52 square inches and the height as 14 inches. Therefore, we can substitute these values into the formula to find the volume of the rectangular prism:
V = Bh = 52 sq in * 14 in = 728 cubic inches
So the volume of the rectangular prism is 728 cubic inches.
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Find the derivative.
f(X) = (2e^3x + 2e^-2x)^4
To find the derivative of f(x) = (2e^(3x) + 2e^(-2x))^4, we can use the chain rule and the power rule.
First, we need to find the derivative of the function inside the parentheses, which is:
g(x) = 2e^(3x) + 2e^(-2x)
The derivative of g(x) is:
g'(x) = 6e^(3x) - 4e^(-2x)
Now, using the chain rule and power rule, we can find the derivative of f(x):
f'(x) = 4(2e^(3x) + 2e^(-2x))^3 * (6e^(3x) - 4e^(-2x))
Simplifying this expression, we get:
f'(x) = 24(2e^(3x) + 2e^(-2x))^3 * (e^(3x) - e^(-2x))
To find the derivative of f(x) = (2e^(3x) + 2e^(-2x))^4, we can use the chain rule. The chain rule states that the derivative of a composite function is the derivative of the outer function times the derivative of the inner function.
Let u = 2e^(3x) + 2e^(-2x). Then f(x) = u^4.
First, find the derivative of the outer function with respect to u:
df/du = 4u^3
Next, find the derivative of the inner function with respect to x:
du/dx = d(2e^(3x) + 2e^(-2x))/dx = 6e^(3x) - 4e^(-2x)
Now, use the chain rule to find the derivative of f with respect to x:
df/dx = df/du * du/dx = 4u^3 * (6e^(3x) - 4e^(-2x))
Substitute the expression for u back into the equation:
df/dx = 4(2e^(3x) + 2e^(-2x))^3 * (6e^(3x) - 4e^(-2x))
This is the derivative of f(x) with respect to x.
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5. Vanessa and Nancy plan to make a birthday cake. Working together, Vanessa and Nancy can complete the
birthday cake in 2 hours. If Nancy works alone, it will take her 3 times as long as it would take Vanessa to
complete the birthday cake. The equation below represents this situation.
2 2
-+-=1
3x
How many hours would it take Nancy to complete the birthday cake if she worked alone?
X
Using an equation, if Nancy worked alone, the number of hours it would take her to complete the birthday cake is 1 hour 30 minutes.
What is an equation?An equation is a mathematical statement that proves the equality or equivalence of two or more mathematical expressions.
Equations use the equal symbol (=) unlike algebraic expressions, which combine variables with numbers, constants, and values using mathematical operands.
The number of hours for Vanessa and Nancy working together to make a birthday cake = 2 hours
The number of hours it takes Vanessa to complete the cake working alone = x
The number of hours it takes Nancy to complete the cake alone = 3x
Equation:3x + x = 2
4x = 2
x = 0.5 = 30 minutes
The total time for Nancy to complete the cake = 3x = 1.5 (3 x 0.5)
= 1 hour 30 minutes
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In ΔOPQ, p = 9. 5 inches, q = 7. 6 inches and ∠O=31°. Find the area of ΔOPQ, to the nearest 10th of a square inch
The area of ΔOPQ is approximately 18.9 square inches, rounding off to nearest 10th.
To find the area of ΔOPQ, we can use the formula:
Area = (1/2) * base * height
We know that p = 9.5 inches, q = 7.6 inches, and ∠O = 31°.
Now, using trigonometry the height h of the triangle can be found using the sin function.
sin(θ) = perpendicular/hypotenuse
perpendicular = hypotenuse* sin(θ)
= 7.6 * sin(31°)
≈ 3.98 inches
Now, we can use the formula for the area:
Area = (1/2) * base * height
Putting in the values, we get:
Area = (1/2) * 9.5 * 3.98
Area ≈ 18.93 square inches
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Pythagorean theorem help quickly please
Answer:
In an isosceles right triangle, the length of the diagonal is √2 times the length of a leg.
c = 6√2 in. = 8.5 in.
Find the perimeter of the rectangle, in feet.
L: 3 1/4 FT
W: 7/8 FT
Answers:
A. 8 1/4 ft
B: 8 1/5 ft
C: 8 1/2 ft
D: 8 1/3 ft
The perimeter of the rectangle is 8 1/4 feet. the correct answer is A.
Perimeter is the total length of the sides of a two-dimensional shape. In a rectangle, opposite sides are equal in length, so the perimeter can be found by adding the lengths of all four sides. To find the perimeter of a rectangle, we use the formula:
Perimeter = 2(length + width)
In this case, the length is given as 3 1/4 feet and the width is given as 7/8 feet. To find the perimeter, we substitute these values into the formula:
Perimeter = 2(3 1/4 + 7/8)
To simplify, we need to convert the mixed number to an improper fraction and find a common denominator for the fractions:
Perimeter = 2(13/4 + 7/8)
Perimeter = 2(26/8 + 7/8)
Perimeter = 2(33/8)
Now we can simplify the expression by multiplying 2 by the fraction:
Perimeter = 66/8
We can reduce this fraction by dividing both the numerator and denominator by 2:
Perimeter = 33/4
Therefore, the perimeter of the rectangle is 8 1/4 feet, which is answer choice A.
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if y varies directly with x and y =20 when x=-2 find y when x=-1
Answer:
y = 10
Step-by-step explanation:
If y varies directly with x, and y=20 when x=-2, the best way to find y when x=-1 is to divide 20/-2, which equals -10.
Now cancel out -1 by dividing it by 1, and do the same with -10 by dividing it by 1 also. This equals 10, and that's your answer. Check the table I made below representing the problem. It should make it easier understand.
Determine the location and value of the absolute extreme values off on the given interval, if they exist f(x) = 8x^3 / 3 +11x^2 - 6x on (-4,1)
Answer:
Calculate X at -4,-3 ,1/4 and 1.You can get 4 values.
Respectively.62.33,45,-0.77,4.6
The absolute maximum value is 123.333 at x = -4, and the absolute minimum value is -11.779 at x ≈ -1.135.
How to find bthe location and value of the absolute extreme valuesTo determine the location and value of the absolute extreme values of the function f(x) = (8/3)x³ + 11x² - 6x on the interval (-4, 1), follow these steps:
1. Find the critical points by taking the first derivative and setting it to zero:
f'(x) = (8/3)(3)x² + 11(2)x - 6 f'(x) = 8x² + 22x - 6
2. Solve for x: 8x² + 22x - 6 = 0
Using a quadratic formula or factoring, we get:
x ≈ -1.135 and x ≈ 0.634 3.
Check the endpoints and critical points for absolute extreme values:
f(-4) = (8/3)(-4)³ + 11(-4)² - 6(-4) ≈ 123.333
f(-1.135) ≈ -11.779 f(0.634) ≈ -0.981
f(1) = (8/3)(1)³ + 11(1)² - 6(1) = 5
The absolute maximum value is 123.333 at x = -4, and the absolute minimum value is -11.779 at x ≈ -1.135.
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What is the area that has 160ft tall 100 feet wide and another area that has 60ft long and 40ft wide , add both shapes together
The area for the first shape is 16,000 square feet, the area for the second shape is 2,400 square feet. The total area of both shapes added together is 18,400 square feet.
To find the area of the first shape, which is a rectangle that is 160 feet tall and 100 feet wide, we can use the formula:
Area = length x width
So, for the first shape, the area is:
Area = 160 ft x 100 ft
Area = 16,000 square feet
To find the area of the second shape, which is a rectangle that is 60 feet long and 40 feet wide, we can use the same formula:
Area = length x width
So, for the second shape, the area is:
Area = 60 ft x 40 ft
Area = 2,400 square feet
To find the total area of both shapes added together, we simply add the two areas:
Total Area = 16,000 square feet + 2,400 square feet
Total Area = 18,400 square feet
Therefore, the total area of both shapes added together is 18,400 square feet.
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Find the necessary sample size.
A population is normal with a variance of 99. Suppose you wish to estimate the population mean μ. Find the sample size needed to assure with 68. 26 percent confidence that the sample mean will not differ from the population mean by more than 4 units.
A. 9
B. 7
C. 613
D. 25
If a population is normal with a variance of 99, the necessary sample size is 7 (Option B).
To find the necessary sample size for a given confidence level and margin of error, we can use the formula:
n = (Z² * σ²) / E²
where n is the sample size, Z is the Z-score corresponding to the desired confidence level, σ² is the population variance, and E is the margin of error.
In this case, the population variance (σ²) is 99, the desired confidence level is 68.26%, and the margin of error (E) is 4 units. The Z-score corresponding to a 68.26% confidence level is approximately 1, as it is close to one standard deviation from the mean in a normal distribution.
Now, we can plug the values into the formula:
n = (1² * 99) / 4²
n = (1 * 99) / 16
n = 99 / 16
n ≈ 6.19
Since we cannot have a fraction of a sample, we round up to the nearest whole number, which is 7. So, the necessary sample size is 7 (Option B).
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Bank Rate (RATE) has a closing price of $13.95 and earnings of $2.71. The company iStar Financial (STAR) has a closing price of $12.18 and earnings of $3.62. Determine which company is financially stronger using their PE ratios.
iStar Financial (STAR) has a lower PE ratio than Bank Rate (RATE), which suggests that it may be financially stronger
To determine which company is financially stronger using their PE ratios, we need to calculate the PE ratio for each company. PE ratio, or price-to-earnings ratio, is a financial metric used to measure the valuation of a company's stock. It is calculated by dividing the market price per share by the earnings per share.
For Bank Rate (RATE), the PE ratio can be calculated as:
PE ratio = market price per share / earnings per share
PE ratio = $13.95 / $2.71
PE ratio = 5.14
For iStar Financial (STAR), the PE ratio can be calculated as:
PE ratio = market price per share / earnings per share
PE ratio = $12.18 / $3.62
PE ratio = 3.37
A lower PE ratio indicates that a company's stock is relatively undervalued compared to its earnings. In this case, iStar Financial (STAR) has a lower PE ratio than Bank Rate (RATE), which suggests that it may be financially stronger.
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In the equation
In the equation
T = -mv²,
T = = my², find the value of T when m = 50 and v= 2
hon simplify.
When m = 50 and v = 2, the value of T is -200 according to Equation 1 and 200 according to Equation 2.
In the given equations, T represents a variable and m and v are constants.
We need to find the value of T when m = 50 and v = 2.
Let's evaluate each equation separately.
Equation 1: T = -mv²
Substituting the given values, we have:
T = -(50)(2)²
T = -(50)(4)
T = -200
Equation 2: T = my²
Substituting the given values, we have:
T = (50)(2)²
T = (50)(4)
T = 200
Thus, when m = 50 and v = 2, Equation 1 gives T = -200 and Equation 2 gives T = 200.
These equations represent two different relationships between the variables.
Equation 1 has a negative sign in front of the result, indicating that T will have a negative value.
On the other hand, Equation 2 does not have a negative sign, resulting in a positive value for T.
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A fair 6-sides die is rolled 550 times. What is a reasonable prediction for the number of times the event of landing on an even number?
The prediction for the number of times the event of landing on an even number in 550 rolls is 275
Estimating the reasonable predictionFrom the question, we have the following parameters that can be used in our computation:
The number of times = 550
The sample space of a fair 6-sided die is
S = {1, 2, 3, 4, 5, 6}
And as such the even numbers are
Even = {2, 4, 6}
This means that in a fair 6-sided die, we have
P(Even) = 3/6
When evaluated, we have
P(Even) = 1/2
So, when the die is rolled 550 times, we have
Expected value = 1/2 * 550
Evaluate
Expected value = 275
Hence, the number of times is 275
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rotation 90 degrees clockwise about the origin, ignore the dots i kinda started it then i got lost
When the points are rotated 90 degrees clockwise about the origin, the result is:
I: (1, -3)J: (-1, -5)H: (-3, -3)How to rotate about the origin ?To rotate a point 90 degrees clockwise about the origin, you can use the following rule: (x, y) becomes (y, -x). Let's apply this rule to the given points:
I - (3, 1)
Rotated I: (1, -3)
J - (5, -1)
Rotated J: (-1, -5)
H - (3, -3)
Rotated H: (-3, -3)
So, after a 90-degree clockwise rotation about the origin, the new coordinates of the points are:
I: (1, -3)
J: (-1, -5)
H: (-3, -3)
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A home buyer is financing a house for $135,950. The buyer has to pay $450 plus 1.15% for a brokerage fee. How much are the mortgage brokerage fees?
$2,489.25
$2,013.43
$2,018.60
$2,031.43
Answer: $2,013.43
Step-by-step explanation:
$135,950 x 1.15% = 1,563.425
Round to $1,563.43
Add in $450
$1,563.43 + $450 = $2,013.43
Given: PA tangent to circle k(O) at A and PB tangent to circle k(O) at B.
Prove: m∠P=2·m∠OAB
PA is tangent to circle k(O), ∠OAP is a right angle. Similarly, ∠OBP is a right angle.
How to prove that m∠P=2·m∠OAB?To prove that m∠P=2·m∠OAB, we need to use the properties of tangents to a circle and the angle relationships between tangent lines and chords in a circle.
First, let's draw a diagram of the situation:
P
/ \
/ \
/ \
/ \
/ \
A-----------B
/ \
/ \
/ \
O \
| \
| \
| \
----------------------------
We are given that PA and PB are tangents to circle k(O) at A and B, respectively. This means that PA and PB are perpendicular to OA and OB, respectively, at the points of tangency A and B. We can also infer that OA and OB are radii of the circle k(O).
Let ∠OAB = x. Then, ∠OBA = x (since OA = OB), and ∠APB = 180° - ∠OAB - ∠OBA = 180° - 2x.
Since PA is tangent to circle k(O), ∠OAP is a right angle. Similarly, ∠OBP is a right angle. Therefore, ∠OAP + ∠OBP = 180°.
Let ∠P = y. Then, we have:
∠OAB + ∠OBA + ∠APB + ∠P = 180°
x + x + (180° - 2x) + y = 180°
y = 2x
Therefore, we have shown that m∠P = 2·m∠OAB, as required.
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Find all the points that are described by the following statement.
the first number of my ordered pair is 50. fo 20 points hurry!!!!!
The statement "the first number of my ordered pair is 50" implies that all the points are of the form (50, y), where y can be any real number.
Therefore, the set of points that satisfy this statement is infinite, and it is not possible to list all of them.
However, if you need 20 specific points, you can choose any 20 values for y and pair them with 50 to obtain 20 points that satisfy the given condition.
For example, some of the points that satisfy this statement are (50, 0), (50, 1), (50, -2), (50, π), and (50, 10^6).
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X-1 if x < 2 Let f(x)=1 if 2sxs6 X+4 if x > 6 a. Find lim f(x). X-+2 b. Find lim f(x). X-6 Select the correct choice and, if necessary, fill in the answer box to complete your choice. O A. lim = X-2 O B. The limit is not - oo or co and does not exist. Select the correct choice and, if necessary, fill in the answer box to complete your choice. O A. lim = X-6 OB. The limit is not - oor oo and does not exist.
a. The limit does not exist.
b. The limit is equal to 4.
a. To find the limit as x approaches 2, we need to evaluate the left-hand and right-hand limits separately and check if they are equal.
Left-hand limit: lim f(x) as x approaches 2 from the left
We have f(x) = x - 1 for x < 2. So, as x approaches 2 from the left, f(x) approaches 1.
Right-hand limit: lim f(x) as x approaches 2 from the right
We have f(x) = 1 for 2 ≤ x ≤ 6 and f(x) = x + 4 for x > 6. So, as x approaches 2 from the right, f(x) approaches 6.
Since the left-hand and right-hand limits are not equal, the limit as x approaches 2 does not exist.
b. To find the limit as x approaches 6, we need to evaluate the left-hand and right-hand limits separately and check if they are equal.
Left-hand limit: lim f(x) as x approaches 6 from the left
We have f(x) = 1 for 2 ≤ x ≤ 6 and f(x) = x + 4 for x > 6. So, as x approaches 6 from the left, f(x) approaches 1.
Right-hand limit: lim f(x) as x approaches 6 from the right
We have f(x) = x + 4 for x > 6. So, as x approaches 6 from the right, f(x) approaches 10.
Since the left-hand and right-hand limits are not equal, the limit as x approaches 6 does not exist.
Therefore, the correct choices are:
a. The limit is not -oo or co and does not exist.
b. lim = 4.
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On a certain plaats moon the acceleration due to gravity is 2.9 m/sec^2 if a rock dropped into a chivaste, how fast it will be going just before it hits the bottom 31 secs later?
the rock will be going 89.9 m/s just before it hits the bottom of the chaste on a certain plaats moon.
To answer your question, we need to use the formula for the acceleration due to gravity, which is:
a = g
where a is the acceleration, and g is the gravitational constant. In this case, we know that the acceleration due to gravity on the moon is 2.9 m/sec^2, so we can substitute that into the formula:
a = 2.9 m/sec^2
Now we need to use the formula for calculating the speed of an object that is falling under the influence of gravity, which is:
v = gt
where v is the speed, g is the gravitational constant, and t is the time. We know that the rock takes 31 seconds to hit the bottom of the chivaste, so we can substitute that into the formula:
t = 31 s
Now we can calculate the speed of the rock just before it hits the bottom:
v = gt
v = 2.9 m/sec^2 x 31 s
v = 89.9 m/s
So the rock will be going 89.9 m/s just before it hits the bottom of the chivaste on the certain plaats moon.
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Which expression should you simplify to find the 90% confidence interval for a sample of 64 people with a mean of 36 and standard deviation of 3?
The 90% confidence interval for the sample is (35.384, 36.616).
How to calculate the interval for a sample of 64 people?We may use the following expression to determine the 90% confidence interval for a sample of 64 participants with a mean of 36 and a standard deviation of 3.
⇄
where: X = sample mean
Z[tex]\alpha[/tex]/2 = critical value for a 90% level from the ordinary normal distribution, which is roughly 1.645
σ = population standard deviation
n = sample size
Inputting the values provided yields:
CI = 36 ± 1.645 * (3 / √64)
When we condense the equation between the brackets, we obtain:
CI = 36 ± 1.645 * (3 / 8)
Further simplification results in:
CI = 36 ± 0.616
Consequently, the sample's 90% confidence interval is as follows:
(36 - 0.616, 36 + 0.616) = (35.384, 36.616)
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Which expression is equivalent to 16 + 2 x 36?
Answer choices:
The correct expression equivalent to 16 + 2 x 36 is 88.
To simplify the expression, we need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). In this case, we have multiplication and addition.
Using the order of operations, we first need to perform the multiplication:
2 x 36 = 72
Then, we add 16 to the product:
16 + 72 = 88
Therefore, 16 + 2 x 36 is equivalent to 88.
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An object accelerates from rest to a speed of 10 m/s over a distance 25 m. What acceleration did it experience?
The acceleration is 2 m/s²
How to calculate the acceleration?The first step is to write out the parameters given in the question
Initial velocity which is denoted u= 0final velocity which is denoted with v= 10 m/sdistance which is denoted with s = 25 mAcceleration is the rate at which an object changes its velocity over time.
The formula to calculate the acceleration is v²= u² + 2as10²= 0² + 2(a)(25)100= 2a(25)100= 50a
Divide both sides by the coefficient of a which is 50
100/50 = 50a/50
a= 2
Hence the acceleration of the object is 2 m/s²
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