a. The distribution of x1 x2 is z1z2 ~ Cauchy(0,1). (b) The probability that x1 x2 is greater than 16 is 0.1056. (c) The distribution of 3x1 + 2x2 + x3, is given as N(38, 29).
What is cumulative distribution function?A probability density function (PDF) expresses the likelihood that a continuous random variable will take a specified value or fall within a predetermined range of values. It is a derivative of the cumulative distribution function (CDF), which is the likelihood that a random variable will have a value that is less than or equal to a certain value.
The CDF is a function that converts every potential value of the random variable to a probability between 0 and 1, and it is defined for both discrete and continuous random variables.
a. Covert the x1 and x3 into standard normal variables by subtracting their means and dividing by their standard deviations:
z1 = (x1 - 4) / 2 ~ N(0,1)
z2 = (x2 - 8) / 3 ~ N(0,1)
The product is thus:
z1z2 ~ Cauchy(0,1)
b. The probability that x1 x2 is greater than 16:
Y / z1 ~ Cauchy(0,1)
Now,
z1 = Y / (z1z2) ~ Cauchy(0,1)
Here, the probability that x1 x2 > 16 is:
P(x1 x2 > 16) = P(Y / z1 > 16 / z1) = P(z1 < -Y / 16) + P(z1 > Y / 16)
= 2 * P(z1 < -Y / 16)
Substituting the value of z1 and Y we have:
P(x1 x2 > 16) = 2 * P(z1 < -16z1z2 / (9)) = 2 * Φ(-16z2 / 3) ≈ 0.1056
Hence, the probability that x1 x2 is greater than 16 is 0.1056.
c) The distribution of 3x1 + 2x2 + x3, is given as:
[tex]3x1 + 2x2 + x3 \~ N(34 + 28 + 12, 3^22^2 + 2^23^2 + 4^2) = N(38, 29)[/tex]
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assume the mapping t w p2 ! p2 defined by t a0 c a1t c a2t 2 d 2 a0 c .3 a1 c 4 a2/t c .5 a0 6 a2/t 2 is linear. find the matrix representation of t relative to the basis b d f1; t; t 2 g.
So, the matrix representation of T relative to the basis B = {f1, t, t²} is:
| 2.5 3 0 |
| 0 4 0 |
| 0 0 6 |
To find the matrix representation of the linear transformation T relative to the basis B = {f1, t, t²}, we need to apply T to each element of the basis and then express the result as a linear combination of the basis elements.
Let's apply T to each element of the basis B:
1. T(f1) = T(1) = 2(1) + 0.5(1) = 2.5
2. T(t) = T(c) = 3(c) + 4(c²) = 3f1 + 4t
3. T(t²) = T(c²) = 6(c²) = 6t²
Now, we can express the results as linear combinations of the basis elements:
1. T(f1) = 2.5f1 + 0t + 0t²
2. T(t) = 3f1 + 4t + 0t²
3. T(t²) = 0f1 + 0t + 6t²
Finally, we can form the matrix representation of T relative to the basis B by using the coefficients of the linear combinations as the columns of the matrix:
T matrix = | 2.5 3 0 |
| 0 4 0 |
| 0 0 6 |
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The matrix representation of t with respect to the basis b = [tex]{f1, t, t^2}[/tex] is:
[1/2 -4/3 1 ]
[1 8/3 0 ]
[0 -5/2 3/2 ].
To find the matrix representation of the linear transformation t with respect to the given basis, we need to apply t to each of the basis vectors and represent the result as a linear combination of the basis vectors.
The coefficients of these linear combinations will form the columns of the matrix representation.
First, we apply t to each of the basis vectors:
[tex]t(1) = a0 + a1t + a2t^2 = a0 + a1f1 + a2t - (a1/2)f1 - (3a2/2)t^2[/tex]
[tex]t(t) = a0 + (4/3)a1t + (5/6)a2/t = a0 + (4/3)t + (5/6)t^2 - (4/3)f1 - (5/2)t^2[/tex]
[tex]t(t^2) = a0 + (3/2)a2/t^3 = a0 + (3/2)t^2 - (3/2)f1[/tex]
Next, we represent these results as linear combinations of the basis vectors:
[tex]t(1) = (a0 - a1/2)f1 + (a1 + a2)t - (3a2/2)t^2[/tex]
[tex]= 1f1 + 0t + 0t^2 + (-1/2)f1 + 1t + 0t^2 + 0f1 - (3/2)t^2[/tex]
[tex]= (1/2)f1 + 1t - (3/2)t^2[/tex]
[tex]t(t) = (-4/3)f1 + (a0 + 4/3)t + (5/6)t^2[/tex]
[tex]= 0f1 + 1t + 0t^2 + (-4/3)f1 + (4/3)t + (5/6)t^2 + 0f1 + 0t - (5/2)t^2[/tex]
[tex]= (-4/3)f1 + (8/3)t - (5/2)t^2[/tex]
[tex]t(t^2) = f1 + (a0 - 3/2)t^2[/tex]
[tex]= 0f1 + 0t + 1t^2 + 1f1 + 0t + 0t^2 + 0f1 + (1/2)t^2[/tex]
[tex]= 1f1 + 0t + (3/2)t^2[/tex]
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Can someone help me fast with this please!?!?!
If s(d) represents the number of songs downloaded in a year d, what is the interpretation of s(2020) = 5,220,000.
A. 5,220,000 songs were downloaded in the year 2020.
B. There is not enough information to interpret the information.
C. In the year 2020 $5,220,000 was earned from downloaded songs.
D. 2,020 songs were downloaded at a cost of $5,220,000.
the correct answer is A.
5,220,000 songs were downloaded in the year 2020.
If s(d) represents the number of songs downloaded in a year d, what is the interpretation of s(2020) = 5,220,000?The interpretation of s(2020) = 5,220,000 is "5,220,000 songs were downloaded in the year 2020".
Therefore, the correct answer is A. 5,220,000 songs were downloaded in the year 2020.
Interpretation refers to the process of explaining or giving meaning to information, data, or phenomena. It involves analyzing and making sense of information to draw conclusions or make decisions based on the findings.
Interpretation can involve subjective judgment and may depend on the perspective, assumptions, or biases of the interpreter.
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The numerator and denominator of a fraction are in the ratio of one to two. When the numerator is decreased by two and
the denominator is multiplied by two, the simplified value of the new fraction is 3/8. Find the original fraction.
The original fraction is x/(2x) = 4/8, which simplifies to 1/2.
Let the numerator of the original fraction be x and the denominator be 2x (since the numerator and denominator are in the ratio of 1:2).
When the numerator is decreased by two, the new numerator is x - 2. When the denominator is multiplied by two, the new denominator is 4x.
We know that the simplified value of the new fraction is 3/8, so we can write the following equation:
(x - 2)/(4x) = 3/8
To solve for x, we can cross-multiply:
8(x - 2) = 3(4x)
8x - 16 = 12x
4x = 16
x = 4
Therefore, the original fraction is x/(2x) = 4/8, which simplifies to 1/2.
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Use the table to answer the question that follows. ROR Portfolio 1 Portfolio 2 Portfolio 3
8. 9% $850 $1,050 $1,175
−5. 1% $2,425 $1,950 $550
12. 4% $280 $1,295 $860
4. 2% $1,400 $745 $550
0. 9% $2,330 $1,050 $2,000
Using technology, calculate the weighted mean of the RORs for each portfolio. Based on the results, which list shows a comparison of the overall performance of the portfolios, from best to worst?
The weighted mean of the RORs for each portfolio, from best to worst, is:
Portfolio 3: 4.36%
Portfolio 2: 3.2%
Portfolio 1: 0.94%
To calculate the weighted mean of the RORs for each portfolio, we need to multiply each rate of return by its corresponding portfolio value, sum the results, and divide by the total value of the portfolios:
Weighted Mean ROR = sum of value / total amount
sum of value = portfolio value x rate of return
For Portfolio 1:
(0.089 x 850) + (-0.051 x 2425) + (0.124 x 280) + (0.042 x 1400) + (0.009 x 2330)
Sum of value = 75.65 - 123.68 + 34.72 + 58.8 + 20.97
= 61.46.
Weighted Mean ROR = 61.46 / (850 + 2425 + 280 + 1400 + 2330)
= 61.46 / 7285
= 0.0094 or 0.94% (third)
For Portfolio 2:
(0.089 x 1050) + (-0.051 x 1950) + (0.124 x 1295) + (0.042 x 745) + (0.009 x 1050)
Sum of value = 93.45 - 99.45 + 160.58 + 31.29 + 9.45
= 195.32.
Weighted Mean ROR = 195.32 / (1050 + 1950 + 1295 + 745 + 1050)
= 195.32 / 6090
= 0.032 or 3.2% (second)
For Portfolio 3:
(0.089 x 1175) + (-0.051 x 550) + (0.124 x 860) + (0.042 x 550) + (0.009 x 2000)
Sum of value = 104.58 - 28.05 + 106.64 + 23.1 + 18
= 224.27.
Weighted Mean ROR = 224.27 / (1175 + 550 + 860 + 550 + 2000)
= 224.27 / 5,135
= 0.0436 or 4.36% (first)
To compare the overall performance of the portfolios, we can rank them based on their weighted mean RORs, from highest to lowest:
Portfolio 3: 4.36%
Portfolio 2: 3.2%
Portfolio 1: 0.94%
Therefore, the overall performance of the portfolios, from best to worst, is Portfolio 3, Portfolio 2, and Portfolio 1.
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devry math 221 week 6 quiz (co 5) a company claims that its heaters last less than 5 years. write the null and alternative hypotheses.
Null hypothesis: The average lifespan of the heaters is equal to or greater than 5 years
Alternative hypothesis: The average lifespan of the heaters is less than 5 years.
What are null and alternative hypotheses of the claim?In hypothesis testing, the null hypothesis (H0) is a statement that assumes no significant difference between a sample statistic and a population parameter. The alternative hypothesis (Ha) is a statement that contradicts the null hypothesis and asserts that there is a significant difference between the sample statistic and the population parameter.
In this scenario, the company claims that its heaters last less than 5 years. We can express this claim as the alternative hypothesis (Ha), which states that the average lifespan of the heaters is less than 5 years.
On the other hand, the null hypothesis (H0) is a statement that assumes that the average lifespan of the heaters is equal to or greater than 5 years. This is the default assumption until evidence is found to support the alternative hypothesis.
To test these hypotheses, we would collect a sample of heaters and measure their lifespans. We would then calculate the sample mean and compare it to 5 years. If the sample mean is significantly less than 5 years, we would reject the null hypothesis and conclude that the average lifespan of the heaters is less than 5 years.
In summary, the null and alternative hypotheses for this scenario are:
Null hypothesis (H0): The average lifespan of the heaters is equal to or greater than 5 years.
Alternative hypothesis (Ha): The average lifespan of the heaters is less than 5 years
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The expression (h) (b, + b₂) gives the area of a trapezoid, with b, and b, representing the two base lengths of a trapezoid and h representing the height. Find the area of a trapezoid with base lengths 4 in. and 6 in. and a height of 8 in. (Lesson 10.2)
Answer:
A = 40 in²
Step-by-step explanation:
the area (A) of a trapezoid is calculated as
A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂)
where h is the height between the bases b₁ and b₂
here h = 8 , b₁ = 4 , b₂ = 6 , then
A = [tex]\frac{1}{2}[/tex] × 8 × (4 + 6)
= 4 × 10
= 40 in²
5x + 2(x-3) =5x + 2(3-x) what kind of solution
quadratic inequality
Answer:
3
Step-by-step explanation:
5x + 2(x-3) =5x + 2(3-x)
or，5x＋2x－6＝5x＋6－2x
or，7x－6＝3x＋6
or，4x＝12
or，×＝3
Given vectors a=(1,2)b=(2,1) ,find 3a-3b
the major flaw of the linear probability model is that a. the actuals can only be 0 and 1, but the predicted are almost always different from that. b. the regression r2 cannot be used as a measure of fit. c. people do not always make clear-cut decisions. d. the predicted values can lie above 1 and below 0.
The major flaw of the linear probability model is, Option d, which allows predicted values to range from above 1 to below 0
The binary dependent variable, which accepts values of 0 and 1, and the independent variables are assumed to have a linear relationship under the linear probability model.
The anticipated values from the linear probability model, however, can range from 0 to 1, and in some circumstances, they can be either above or below 0. This goes against the dependent variable's probabilistic character and can produce inaccurate forecasts.
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Multiple Choice Salton City, California is
located 38 meters below sea level. What is
a possible elevation for Salton City?
NoNoNoNoNoNoNoNoNoNoNoNo
The An eclateral triangular pyramid has a set height of 13 trenger base has a perimeter of 4.8 inches and an area of 13 spre me Find the surface area of the pyramid. C 1-0
The surface area of the pyramid is 44.2 square inches, which is closest to option (C) 44.2.
Surface area calculation.
To solve the problem, we can start by using the formula for the area of an equilateral triangle to find the length of one side of the base. Let s be the length of one side of the base, then we have:
Area of the base = (sqrt(3)/4) * s^2 = 13
Solving for s, we get:
s^2 = (4 * 13) / sqrt(3)
s = 8.0
Therefore, the perimeter of the base is 3 * s = 24 inches
Next, we can use the formula for the surface area of a pyramid to find the surface area of the entire pyramid. Let B be the area of the base, then we have:
Surface area = B + (1/2) * P * h
where P is the perimeter of the base and h is the height of the pyramid.
Substituting the given values, we get:
Surface area = 13 + (1/2) * 4.8 * 13
Surface area = 13 + 31.2
Surface area = 44.2 square inches
Therefore, the surface area of the pyramid is 44.2 square inches, which is closest to option (C) 44.2.
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The function V(t) = 30000(0.85) value V(t) represents the values v(t) of Nancy's car after t years. What is the depreciation rate of Nancy's car?
The depreciation rate of Nancy is 15%.
What is known by depreciation?Depreciation is the reduction in the value of an asset over time due to wear and tear, obsolescence, or other factors. It is a non-cash expense that is recorded on a company's income statement, which reflects the decrease in the asset's value during its useful life. Depreciation is commonly used in accounting to allocate the cost of an asset over its useful life, and it helps businesses to accurately reflect the true value of their assets on their financial statements.
Define function?In mathematics, a function is a relation between a set of inputs and a set of possible outputs with the property that each input is related to exactly one output.
The given function V(t) = [tex](30000*0.85)^{t}[/tex]represents the value of Nancy's car after t years.
Depreciation rate is the rate at which the value of an asset decreases over time. In this case, the depreciation rate of Nancy's car is 1 - 0.85 = 0.15 or 15%.
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From a piece of cardboard that is 32 inches by 12 inches, you are making a box by cutting equal squares at each corner and folding it up. What size should the squares be for the volume of the box to be maximal? Find x
For the maximum volume of , the value of x must be smaller that is x = 2.90 inch. Size of square = 8.41 sq. in.
Explain about maxima and minima:The issue is an application of maxima and minima, where the unknown quantity is located using the first derivative. Keep in mind that the height of a box is equal to a side of the cut square when the sides are bent upward. Moreover, the box formula's volume is
Volume = length * width * height
Given:
Length of rectangle cardboard l = 32 inchesWidth of rectangle cardboard w = 12 inchesLength of the side of each square - x inxhes.Volume of new box = (32 - 2x)(12 - 2x)x
Rearranging terms:
V = 4x³ - 88x² + 384x
For maximum volume, V' = 0 (first derivative)
V' = 12x² - 167x + 384
V' = 0
12x² - 167x + 384 = 0
Solve using quadratic formula:
x = [-b ± √(b² - 4ac)] / 2a
a = 12 , b = - 167 , c = 384
x = [167 ± √(167² - 4*384*12)] / 2*12
x = [167 ± 7√193] / 24
Now,
x = [167 + 7√193] / 24
x = 11.01 inch
and,
x = [167 - 7√193] / 24
x = 2.90 inch
For the maximum volume of , the value of x must be smaller that is x = 2.90 inch.
Size of square = x²
Size of square = 2.90²
Size of square = 8.41 sq. in.
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A concert hall opened in 2019. The average number of visitors per concert during that year was 584. In 2020, the average number of visitors per concert increased by 1. 2% find the average number of visitors per concert in 2020
The average number of visitor per concert in 2020 as compare to average number of visitors in 2019 is equal to 591 ( approximately ).
Average number of visitors per concert in 2019 was 584,
And the average number of visitors per concert in 2020 increased by 1.2%,
The average number of visitors per concert in 2020 as follows,
Average number of visitors per concert in 2020
= Average number of visitors per concert in 2019 + Increase in average number of visitors per concert
Increase in average number of visitors per concert
= 1.2% of the average number of visitors per concert in 2019
= (1.2/100) x 584
= 7.008
This implies,
The increase in the average number of visitors per concert from 2019 to 2020 is approximately 7.008.
Adding this increase to the average number of visitors per concert in 2019 gives us,
Average number of visitors per concert in 2020
= 584 + 7.008
= 591.008
Rounding this to the nearest whole number, we get,
Average number of visitors per concert in 2020 ≈ 591
Therefore, the average number of visitors per concert in 2020 is approximately 591.
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Which of the following relationships proves why ADC and BCD are congruent?
A.ASA
B.SAS
C.SAA
D.HL
A relationship that proves why ADC and BCD are congruent include the following: D. HL.
What is the Right Triangles Similarity Theorem?In Mathematics, the Right Triangles Similarity Theorem states that when the altitude of a triangle is drawn to the hypotenuse of a right angled triangle, then, the two (2) triangles that are formed would be similar to each other, as well as the original triangle.
What is HL?In Mathematics, HL is an abbreviation for hypotenuse leg and it can be defined as a theorem which states that if the hypotenuse and one (1) leg in a right-angled triangle are congruent to the hypotenuse and leg of another right-angled triangle, then the two (2) triangles would be congruent.
By applying the hypotenuse leg (HL) theorem across right-angles BCD (∠BCD) and ADC (∠ADC), we have the following;
ΔAC ≅ ΔBD
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Answer:
SAS
Step-by-step explanation:
what is 12 times the sum of a number v/u and 41
The expression 12 times the sum of the number v/u and 41 in the mathematical form will be 12(v/u + 41).
What is an expression?
The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs. Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.
Here, we have
Given: v/u and 41.
We have to find 12 times the sum of a number.
The sum of v/u and 41 is v/u + 41, then 12 times this sum is written as below:-
= 12(v/u + 41)
Hence, the expression 12 times the sum of the numbers v and 41 in the mathematical form will be 12(v + 41).
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Mr. Yara has 200 acres of land available to plant for three types of fruit trees (lemon, peach and
cherry). Based on the market survey, lemon has a selling price of $2 per kg; peach has a selling
price of $1. 5 per kg and cherry has a selling price of $4 per kg. The average yield per acre for
lemon, peach and cherry is 4, 6 and 2 tonne, respectively. The fertilizer requires per acre for
lemon, peach and cherry is 100, 100 and 50 kg, respectively. An acre of lemon and cherry
requires 10 labour hours each whereas an acre of peach requires 12 labour hours. Maximum
availability of labour is 20,000 hours. The cost of fertilizer is $2 per kg and the cost of labour is
$40 per hour. What is the optimal allocation of acre to the three types of fruit trees?
[1 tonne = 1000kg]
(a) Formulate a linear programming model to maximize the profit.
(b) Find the optimal solution by using simplex algorithm.
(a) The linear programming model to maximize the profit is written as,
Maximize Z = 2(4x1)(100) + 1.5(6x2)(100) + 4(2x3)(1000) - 2(100x1 + 100x2 + 50x3) - 40(10x1 + 12x2)
(b) The optimal solution is x1 = 0, x2 = 8/3, x3 = 8, x4 = 0, and the maximum profit is $40.
(a) Linear programming model:
Let x1, x2, and x3 be the number of acres allocated to lemon, peach, and cherry trees, respectively. Then, the objective function we want to maximize is:
Maximize Z = 2(4x1)(100) + 1.5(6x2)(100) + 4(2x3)(1000) - 2(100x1 + 100x2 + 50x3) - 40(10x1 + 12x2)
The first term represents the revenue from selling lemons, the second term represents the revenue from selling peaches, the third term represents the revenue from selling cherries, the fourth term represents the cost of fertilizer, and the last term represents the cost of labor.
The constraints are:
x1 + x2 + x3 ≤ 200 (total available land)
10x1 + 12x2 + 10x3 ≤ 20000 (total available labor hours)
x1, x2, x3 ≥ 0 (non-negativity constraints)
(b) Simplex algorithm:
Convert the linear programming model into standard form by introducing slack variables and expressing all variables in terms of these variables.
Maximize Z = 2(4x1)(100) + 1.5(6x2)(100) + 4(2x3)(1000) - 2(100x1 + 100x2 + 50x3) - 40(10x1 + 12x2)
Subject to:
x1 + x2 + x3 + x4 = 200
10x1 + 12x2 + 10x3 + x5 = 20000
x1, x2, x3, x4, x5 ≥ 0
In this case, the entering variable is x1, as it has the highest coefficient in the objective function.
Step 5 (continued):
1.6 0.1 0 1 -48 32 <- Z
0.4 0.9 1 1/10 0 40 <- x1
8.4 3.3 0 -1/10 1 1840 <- x5
The entering variable is x3, as it has the highest coefficient in the objective function.
The leaving variable is x1, as it has the smallest ratio of RHS to its coefficient in the x3 column.
x2 x1/12 x3 x5/120 x4 RHS
2.5 1/5 0 -1/60 0 40 <- Z
0.5 -1/5 1 1/60 0 8 <- x3
0.5 2/15 0 1/60 1/10 8/3 <- x2
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A homeowner bought a homeowner's insurance policy. The homeowner pays an annual $650 premium for property coverage with a deductible is $1,175 for each claim. A windstorm causes $42,500 in damages. If a claim for the full amount of damages is approved, how much will the homeowner's insurance company pay for the damages?
$42,500
$41,325
$41,975
$40,825
Answer:
The homeowner’s insurance company will pay for the damages after the homeowner pays the deductible of $1,175 for each claim. Therefore, the amount that the homeowner’s insurance company will pay for the damages is $42,500 - $1,175 = $41,325.
I hope that helps! (´▽`ʃ♡ƪ)
Step-by-step explanation:
Find the measures of angle a and B. Round to the nearest degree.
The measure of angle A and angle B are 28.61 and 61.39 rounded to two decimal place, using trigonometric ratio of tangent for the respective angles.
What is trigonometric ratios?The trigonometric ratios is concerned with the relationship of an angle of a right-angled triangle to ratios of two side lengths.
The basic trigonometric ratios includes;
sine, cosine and tangent.
tan B = 6/11 {opposite/adjacent}
B= tan⁻¹(6/11) {cross multiplication}
B = 28.6105.
tan A = 11/6 {opposite/adjacent}
A= tan⁻¹(11/6) {cross multiplication}
A = 61.3895.
Therefore, the measure of angles A and B are 28.61 and 61.39 rounded to two decimal place, using trigonometric ratio of tangent for the respective angles.
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HELP ME PLS
1. If the diameter of a circle is segment AB where Point A is located at (-3, 6), and Point B located at (-8,-1), what is the diameter of the circle?
2√2
√146
√74
74
The diameter of the circle is √74. Answer: C.
What is circle?
A circle is a geometric shape that consists of all points in a plane that are equidistant from a fixed point called the center. It can also be defined as the set of points that are a fixed distance (called the radius) away from the center point.
To find the diameter of the circle, we need to find the distance between points A and B, which will give us the length of the diameter.
Using the distance formula, we have:
d = √[(x2 - x1)² + (y2 - y1)²]
where (x1, y1) = (-3, 6) and (x2, y2) = (-8, -1).
Plugging in the values, we get:
d = √[(-8 - (-3))² + (-1 - 6)²]
= √[(-5)² + (-7)²]
= √[25 + 49]
= √74
Therefore, the diameter of the circle is √74. Answer: C.
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From the top of a 120-foot-high tower, an air traffic controller observes an airplane on the runway at an angle of depression of 19°. How far from the base of the tower is the airplane? Round to the nearest tenth.
1. 126.9 ft
2. 368.6 ft
3. 41.3 ft
4. 348.5 ft
Using a trigonometric relation we can see that the correct option is the last one;
4. 348.5 ft
How to find the distance?We have a right triangle, so we can use trigonometric relations.
The angle at the top of the triangle is a, and it must solve the equation:
a + 19° = 90°
a = 90° - 19° = 71°
Now we can use the trigonometric relation:
tan(a) = (opposite cathetus)/(adjacent cathetus)
REplacing what we know:
tan(71) = ?/120 ft
120ft*tan(71) = ? = 348.5ft
That is the distance.
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Cheyenne has a part-time job at which she gets paid by the hour. The table below shows how much money Cheyenne can earn for working various amounts of hours.
How many hours, h, must Cheyenne work to earn $56.00?
Answer:
Can i see the full answer so I can help you?
Step-by-step explanation:
Standard deviation is a: Group of answer choices A. numerical indicator of how widely dispersed possible values are distributed around the correlation coefficient B. numerical indicator of how widely dispersed possible values are distributed around the coefficient of variation C. measure of the relative risk of one asset compared with another D. numerical indicator of how widely dispersed possible values are distributed around the mean
The correct answer is D. Standard deviation is a numerical indicator of how widely dispersed possible values are distributed around the mean.
It is a common measure used to assess the variability or spread of a set of data points. It is calculated by taking the square root of the variance, which is the average of the squared differences from the mean. The standard deviation is an important statistical tool in many fields, including finance, economics, and engineering.
Standard deviation is a measure of variation or dispersion between values in a set of data. It is a numerical indicator of how widely dispersed possible values are distributed around the mean (or expected value), μ. The lower the standard deviation, the closer the data points tend to be to the mean
Standard deviation is a numerical indicator of how widely dispersed possible values are distributed around the mean. It is a commonly used measure to quantify the amount of variation or dispersion in a set of data values.
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Standard deviation is a statistical measure that quantifies the amount of variability or dispersion in a set of data values.
Number indicating how widely spread out possible values are from the mean. The correct answer is D.
It is calculated as the square root of the variance, which is the average of the squared differences between each data point and the mean. Standard deviation provides information about how closely the data points are clustered around the mean, and a larger standard deviation indicates a greater dispersion or variability of the data points from the mean. In other words, it is a measure of how widely the possible values are distributed around the mean.
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Urgent, please help!
It has been proved that the lines MN and PR are parallel because they have the same slope.
How to identify the slope of parallel lines?We are given the coordinates of the points P, Q and R as:
P(-3, -6)
Q(1, 4)
R(5, -2)
Since M is the midpoint of PQ, we have:
M = (-3 + 1)/2, (-6 + 4)/2
M = (-1, -1)
N is the midpoint of QR and so:
N = (1 + 5)/2, (4 - 2)/2
N = (3, 1)
Slope of MN = (1 + 1)/(3 + 1) = 1/2
Slope of PR = (-2 + 6)/(5 + 3)
Slope of QR = 4/8 = 1/2
Both slopes are equal and as such they are parallel lines
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Juan can run 38 yards in 5 seconds. If he keeps the same pace, how many yards can he run in 30 seconds? Responses
Answer: 228 yards
Step-by-step explanation:
Answer:
228
Step-by-step explanation:
log25 5 = -1/2 1/2 2
Answer:
Step-by-step explanation:
In log25 5 = x, the little number is the base and the x is the exponent.
25^x = 5
x = 1/2
There are 90 pens in a box and 36 of them are red and the rest of them are black What is the ratio of the red pens to black pens
If there are 90 pens in a box and 36 of them are red and the rest of them are black, the ratio of red pens to black pens in the box is 2:3.
The ratio of red pens to black pens in the box can be expressed as a fraction or as a simplified ratio. To do this, we need to determine the number of black pens in the box.
We know that there are 90 pens in total, and 36 of them are red. Therefore, the number of black pens can be found by subtracting the number of red pens from the total:
90 pens - 36 red pens = 54 black pens
Now we know that there are 54 black pens and 36 red pens in the box. To express this as a ratio, we can simplify it by dividing both numbers by their greatest common factor (GCF), which in this case is 18:
36/18 : 54/18
Simplifying further, we get:
2:3
This means that for every 2 red pens, there are 3 black pens in the box.
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find the volume of a cylinder with a diameter of 22 yd and a height of 7 yd
V=π(d
2)2h=π·(20.12
2)2·6.4≈2034.42618m
Haywood Price purchased living room furniture for $1,860. He borrowed $1,200 and promised to repay the loan in 2 years. The finance charge was $308.25. To the nearest hundredth of a percent, what is the annual percentage rate?
The annual percentage rate is approximately 9.97% when rounded to the nearest hundredth of a percent.
How to Find the Annual Percentage Rate?To find the annual percentage rate (APR), we can use the following formula:
APR = (finance charge / loan amount) / (loan period in years) x 100%
First, let's calculate the loan amount by subtracting the finance charge from the total cost of the furniture:
Loan amount = $1,860 - $308.25 = $1,551.75
Next, let's convert the loan period of 2 years to the decimal form of 2:
Loan period = 2 years = 2.0 years
Now we can plug in the values into the formula and solve for the APR:
APR = ($308.25 / $1,551.75) / (2.0) x 100%
APR = 0.0997 x 100%
APR ≈ 9.97%
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Use the functions f(x) and g(x) to answer the question. F(x)=x²-16; g(x)=x+4
Which answer is equal to (f/g)(x)
A x+4,x=-4
B x+4,x=4
C x-4,x=4
D x-4,x=-4
**All eqaul signs in answers are "do not equal signs"**
Using the functions f(x) and g(x) as F(x)=x²-16; g(x)=x+4, (f/g)(x) = (x^2 - 16)/(x + 4) when x = -4. So, the correct answer is option D.
To find (f/g)(x), we need to divide f(x) by g(x). The notation (f/g)(x) is another way of representing the function f(x)/g(x).
So, we first need to find f(x)/g(x) by dividing f(x) by g(x):
f(x)/g(x) = (x^2 - 16)/(x + 4)
Now, we can plug in the values of x in each option and see which one gives us the correct function.
Option A: (f/g)(-4) = ((-4)^2 - 16)/(-4 + 4) = undefined
Option B: (f/g)(4) = (4^2 - 16)/(4 + 4) = -1
Option C: (f/g)(4 - 4) = (0^2 - 16)/(4 - 4) = undefined
Option D: (f/g)(-4 - 4) = ((-4)^2 - 16)/(-4 - 4) = 0
Therefore, the correct answer is option D: (f/g)(x) = (x^2 - 16)/(x + 4) when x = -4.
Note that options A and C give undefined values because they have x + 4 in the denominator, which makes the function undefined at x = -4 and x = 4, respectively.
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