Answer
Consider the time taken to completion time (in months) for the construction of a particular model of homes: 4.1 3.2 2.8 2.6 3.7 3.1 9.4 2.5 3.5 3.8 Find the mean, median mode, first quartile and third quartile. Find the outlier?
To find the mean, we add up all the values and divide by the number of values:
Mean = (4.1 + 3.2 + 2.8 + 2.6 + 3.7 + 3.1 + 9.4 + 2.5 + 3.5 + 3.8) / 10
Mean = 36.7 / 10
Mean = 3.67
To find the median, we need to put the values in order:
2.5, 2.6, 2.8, 3.1, 3.2, 3.5, 3.7, 3.8, 4.1, 9.4
The middle number is the median, which is 3.35 in this case.
To find the mode, we look for the value that appears most often. In this case, there is no mode as no value appears more than once.
To find the first quartile (Q1), we need to find the value that separates the bottom 25% of the data from the top 75%. We can do this by finding the median of the lower half of the data:
2.5, 2.6, 2.8, 3.1, 3.2
The median of this lower half is 2.8, so Q1 = 2.8.
To find the third quartile (Q3), we need to find the value that separates the bottom 75% of the data from the top 25%. We can do this by finding the median of the upper half of the data:
3.7, 3.8, 4.1, 9.4
The median of this upper half is 3.95, so Q3 = 3.95.
To find the outlier, we can use the rule that any value more than 1.5 times the interquartile range (IQR) away from the nearest quartile is considered an outlier. The IQR is the difference between Q3 and Q1:
IQR = Q3 - Q1
IQR = 3.95 - 2.8
IQR = 1.15
1.5 times the IQR is 1.5 * 1.15 = 1.725.
The only value that is more than 1.725 away from either Q1 or Q3 is 9.4. Therefore, 9.4 is the outlier in this data set.
Answer
To find the perimeter of a regular polygon with n sides, we can use the formula:
Perimeter = n * s
where s is the length of each side. To find s, we can use trigonometry to find the length of one of the sides and then multiply by the number of sides.
In a regular polygon with n sides, the interior angle at each vertex is given by:
Interior angle = (n - 2) * 180 degrees / n
In a 15-sided polygon, the interior angle at each vertex is:
(15 - 2) * 180 degrees / 15 = 156 degrees
If we draw a line from the center of the polygon to a vertex, we form a right triangle with the side of the polygon as the hypotenuse, the distance from the center to the vertex as one leg, and half of the side length as the other leg. Using trigonometry, we can find the length of half of the side:
sin(78 degrees) = 12 / (1/2 * s)
s = 2 * 12 / sin(78 degrees)
s ≈ 2.17 inches
Finally, we can find the perimeter of the polygon:
Perimeter = 15 * s
Perimeter ≈ 32.55 inches
Rounding this to the nearest whole number, we get that the best approximation for the perimeter is 33 inches. Therefore, the closest option is (1) 68 inches.
Solve the system of equation and explain geometrically how you know that your answers are solutions to the system. x^2+y^2 =100 and 3x - y = 30 how you know
The solution of the system of equations is given by the ordered pairs [10, 0] and [8, -6].
How to graphically solve this system of equations?In order to graphically solve the given system of equations on a coordinate plane, we would use an online graphing calculator to create a plot of the system of equations and then determine their point of intersection;
x² + y² = 100 ......equation 1.
3x - y = 30 ......equation 2.
Based on the graph shown in the image attached above, we can reasonably infer and logically deduce that the solution to this system of equations lies in both Quadrant I and Quadrant IV, and it is represented by this ordered pairs (10, 0) and (8, -6).
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Mary’s dog weighed 25 kg, but then it got sick and lost 2. 3 kg. A What percentage of body weight did the dog lose? B Mary weighs 58 kg. If Mary lost the same percentage of her body weight as what the dog did, how much would Mary weigh?
The percentage of body weight the dog lost is 9.2%. Mary would weigh 52.664 kg after losing the same percentage of body weight as her dog.
A) To find the percentage of body weight the dog lost, first, calculate the actual weight loss: 25 kg - 2.3 kg = 22.7 kg. Then, divide the weight loss (2.3 kg) by the original weight (25 kg) and multiply by 100 to get the percentage: (2.3 kg / 25 kg) * 100 = 9.2%.
B) If Mary lost the same percentage of her body weight as the dog did, she would lose 9.2% of her weight. To calculate this, multiply her original weight (58 kg) by the percentage (9.2%): 58 kg * 0.092 = 5.336 kg. Now, subtract this weight loss from her original weight to find her new weight: 58 kg - 5.336 kg = 52.664 kg. So, Mary would weigh 52.664 kg after losing the same percentage of body weight as her dog.
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Let x1 > 1 and xn+1 := 2−1/xn for n ∈ N. Show that xn is bounded and monotone. Find the limit. Prove by induction
We have shown that xn is bounded and monotone increasing, and its limit is √2. First, we will show that xn is bounded and monotone increasing by induction:
Base Case: For n = 1, we have x1 > 1, which is true.
Inductive Hypothesis: Assume that xn > 1 for some n = k and show that xn+1 > xn for n = k.
Inductive Step:
We have xn+1 := 2−1/xn
Since xn > 1, we have 1/xn < 1
Therefore, 2−1/xn > 2−1/1 = 1/2
So, xn+1 > 1/2
Since xn > 1, we have xn+1 = 2−1/xn < 2−1/1/ = 1
So, 1/2 < xn+1 < 1
Therefore, xn is bounded and monotone increasing.
Next, we will find the limit of xn as n → ∞:
Let L = lim xn as n → ∞
Then, taking the limit on both sides of xn+1 = 2−1/xn, we get:
L = 2−1/L
Multiplying both sides by L, we get:
L2 = 2−1
Solving for L, we get:
L = ±√2
Since xn > 1 for all n, we have L > 1. Therefore, L = √2.
Thus, we have shown that xn is bounded and monotone increasing, and its limit is √2.
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Evaluate. (3/5)3 enter your answer by filling in the boxes.
the final answer is 27/125.
To evaluate [tex](3/5)^3[/tex], we simply need to multiply (3/5) by itself three times:
[tex](3/5)^3 = (3/5) * (3/5) * (3/5)[/tex]
To simplify, we can first multiply the numerators together and the denominators together:
[tex](3/5)^3 = 27/125[/tex]
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Find the value of x
Hellpppp
Explanation is in the image!
Convert the number 35/4 into decimal form rounded to the nearest hundred.
Answer: 8.75
Step-by-step explanation:
We know that 4 goes into 35 eight times.
35 - (4 * 8) = 3
Next, we know that 3/4 is equal to 0.75 by dividing.
This leaves us with 8.75. Eight wholes and a part of 0.75.
Bill needs a table to display his model train set. the table needs to be 2 times longer and 3 inches shorter
than it is wide and have an area of 4,608 square inches. what does x need to be to fit these requirements?
2x-3
2x - 3 would be 92 - 3 = 89 inches, which is the length of the table
How to find the length?.The table needs to be 2 times longer than it is wide, so its length is 2 times its width, or 2x.
The table also needs to be 3 inches shorter than it is wide, so its width is x + 3 inches.
The area of the table is 4,608 square inches, so we can set up an equation:
2x(x + 3) = 4,608
Simplifying this equation:
2x²+ 6x = 4,608
Dividing both sides by 2:
x²+ 3x - 2,304 = 0
We can solve for x using the quadratic formula:
x = (-b ± √(b² - 4ac)) / 2a
In this case, a = 1, b = 3, and c = -2,304. Substituting these values:
x = (-3 ± √(3² - 4(1)(-2,304))) / 2(1)
Simplifying:
x = (-3 ± √(9 + 9,216)) / 2
x = (-3 ± √(9,225)) / 2
x = (-3 ± 95) / 2
x = 46 or x = -49
Since the width of the table cannot be negative, we can ignore the negative solution. Therefore, x needs to be 46 inches to fit the given requirements.
The length of the table is 2x, or 2(46) = 92 inches, and the width is x + 3, or 46 + 3 = 49 inches. The area is 92 * 49 = 4,508 square inches, which matches the given area requirement.
So, 2x - 3 would be 92 - 3 = 89 inches, which is the length of the table.
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In a certain junior high school made the following expenses in raising a poultry farm: 3 large coops at ghc650 each, 1500 day old chicks at ghc75 for 100 chicks, 1000 bags of feed at ghc1.75 a bag, transport for conveying the 1000 bags of feed at 50gp per bag, druhs and vaccines at ghc120 , other expenses amounted to ghc13.60. a.) calculate the total expenditure
The total expenditure for raising the poultry farm is GHC 5458.60.
To calculate the total expenditure for raising the poultry farm, you need to sum up all the expenses:
1. Cost of 3 large coops at GHC650 each:
Total cost of coops = 3 coops * GHC650/coop
= GHC1950
2. Cost of 1500 day-old chicks at GHC75 for 100 chicks:
Total cost of chicks = (1500 chicks / 100 chicks) * GHC75
= GHC1125
3. Cost of 1000 bags of feed at GHC1.75 per bag:
Total cost of feed = 1000 bags * GHC1.75/bag
= GHC1750
4. Transport cost for conveying the 1000 bags of feed at 50gp (GHC 0.50) per bag:
Total transport cost = 1000 bags * GHC0.50/bag
= GHC500
5. Cost of drugs and vaccines at GHC120:
6. Other expenses amounted to GHC13.60.
Now, add up all these expenses to find the total expenditure:
= Cost of coops + Cost of chicks + Cost of feed + Transport cost + Cost of drugs and vaccines + Other expenses
= GHC1950 + GHC1125 + GHC1750 + GHC500 + GHC120 + GHC13.60
= GHC5458.60
So, the total expenditure is GHC5458.60.
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You travel east 10 miles on an adventure, then south 14 miles. You realize you don't want to go on an adventure, so you decide to go directly back where you started your adventure. Assuming the most direct path is walking in a straight line back home, how many miles will you have to walk back home.
Round to the nearest tenth.
you will have to walk approximately 17.2 miles back home.
A right triangle is a triangle in which one of the angles measures 90 degrees (a right angle). The side opposite the right angle is called the hypotenuse, and the other two sides are called the legs. the length of the hypotenuse. Right triangles have many important applications in mathematics, science, and engineering, particularly in trigonometry, which is the study of the relationships between the sides and angles of triangles.
You have formed a right triangle with legs of length 10 and 14. To find the length of the hypotenuse, which is the distance back to your starting point, we can use the Pythagorean theorem:
[tex]c^2 = a^2 + b^2[/tex]
[tex]c^2 = 10^2 + 14^2[/tex]
[tex]c^2 = 100 + 196[/tex]
[tex]c^2 = 296[/tex]
c = sqrt(296)
c ≈ 17.2
Therefore, you will have to walk approximately 17.2 miles back home.
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Dawson, a 42-year-old male, bought a $180,000, 20-year life insurance policy. What is Dawsons annual premium? use the table. $819. 00 $1040. 40 $1859. 40 $2463. 40
Note that Dawson's annual premium will be $2,462.40.
Why is this so?Dawson's annual premium will be $2,462.40.
This can be derived by going across from "Male 40-44" over to "20-year coverage" which is $13.68. Since $13.68 is per $1000 of coverage, you would multiply it by 180 to get $2,462.40.
An insurance premium is the amount of money paid by a person, firm, or enterprise to obtain an insurance coverage. The amount of the insurance premium is governed by a variety of factors and varies from one payee to the next.
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Full Question:
Although part of your question is missing, you might be referring to this full question:
Question 2 of 10
What are the dimensions of AB?
A. 3x2
B. 3x3
C. 2x3
D. 2 x 2
Answer:
Based on the image, we can see that matrix A is a 3x2 matrix, and matrix B is a 2x3 matrix. In order to multiply matrices A and B, the number of columns in matrix A must match the number of rows in matrix B.
Since matrix A has 2 columns and matrix B has 2 rows, we can multiply them together, resulting in a 3x3 matrix. Therefore, the answer is B. The dimensions of AB are 3x3.
I DONT NEED BRAINLEST JUST STAY FUN AND SAFEAns. (c) 2X3
Dimension of matrix is given by row x column
A tabletop in the shape of a trapezoid has an area of 7,021 square centimeters. its longer base measures 131 centimeters, and the shorter base is 105 centimeters. what is the height?
urgent
The height of the trapezoidal tabletop is approximately 59.5 centimeters.
To calculate the height of a trapezoid with the given measurements, we need to use the formula for the area of a trapezoid: A = (b1 + b2)h / 2, where A is the area, b1 and b2 are the lengths of the two bases, and h is the height.
In this problem, the area (A) is 7,021 square centimeters, the longer base (b1) is 131 centimeters, and the shorter base (b2) is 105 centimeters. Our task is to find the height (h).
First, let's plug the given values into the formula:
7,021 = (131 + 105)h / 2
Now, simplify the equation:
7,021 = 236h / 2
To solve for h, multiply both sides of the equation by 2:
14,042 = 236h
Finally, divide both sides by 236:
h ≈ 59.5
Thus, the height is approximately 59.5 centimeters.
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Can somebody help me really quickly please
Answer: 77
Step-by-step explanation:
Bigger Rectangle = LW = 5x5 =25 There are 2 of those. =50
middl rectangle = LW = 5x3=15
triangles= 1/2 b h = 1/2 (3)(4) = 6 but therere are 2 so =12
Add up all shapes=50+15+12=77
|x-3|+|x+2|-|x-5| if 3
|x-3|+|x+2|-|x-5| if x<-2
|x-3|+|x+2|-|x-5| if -2
pls help
i will give brainliest
|x-3|+|x+2|-|x-5| can be broken down into three separate cases based on the value of x:
(x-3) + (x+2) - (x-5) = 2x + 4
(x-3) + (x+2) - (5-x) = 2x - 6
-(x-3) - (x+2) - (5-x) = -3x - 4
We break down the expression into three separate cases based on the value of x. This is because the absolute value function creates "turning points" at which the behavior of the expression changes. We analyze the expression for each case and simplify it to obtain the final answer. The answer depends on the value of x, and we must consider the expression separately for each case.
If x ≥ 5, then the expression becomes:
(x-3) + (x+2) - (x-5) = 2x + 4
If -2 ≤ x < 3, then the expression becomes:
(x-3) + (x+2) - (5-x) = 2x - 6
If x < -2, then the expression becomes:
-(x-3) - (x+2) - (5-x) = -3x - 4
Therefore, the final answer depends on the value of x. If x is greater than or equal to 5, then the answer is 2x + 4. If x is between -2 and 3, then the answer is 2x - 6. And if x is less than -2, then the answer is -3x - 4.
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The length of the radius of a sphere is 6 inches. The length of the radius of a cone is 3 inches, and the height is 7 inches. What is the difference between the volume of the sphere and the volume of the cone?
The difference between the volume of the sphere and the volume of the cone is approximately 838.81 cubic inches.
The volume of a sphere is given by the formula V = (4/3)πr³, where r is the radius. Thus, for a sphere with a radius of 6 inches, the volume is:
V_sphere = (4/3)π(6³) = 904.78 cubic inches
The volume of a cone is given by the formula V = (1/3)πr[tex]^{2h}[/tex], where r is the radius and h is the height. Thus, for a cone with a radius of 3 inches and a height of 7 inches, the volume is:
V_cone = (1/3)π(3²)(7) = 65.97 cubic inches
Therefore, the difference between the volume of the sphere and the volume of the cone is:
V_sphere - V_cone = 904.78 - 65.97 = 838.81 cubic inches
Hence, the difference between the volume of the sphere and the volume of the cone is approximately 838.81 cubic inches.
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An educational psychologist wants to check claims that regular physical exercise improves academic achievement. To control for academic aptitude, pairs of college students with similar GPAs are randomly assigned to either a treatment group that attends daily exercise classes or a control group. At the end of the experiment, the following scores were reported for the six pairs of participants:
GPAs Pair number Physical Exercise No Physical exercise
1 4 3. 75
2 2. 67 2. 74
3 3. 65 3. 42
4 2. 11 1. 67
5 3. 21 3
6 3. 6 3. 25
7 2. 8 2. 65
Using t, test the null hypothesis at the. 01 level of significance Specify the p-value for this test result. If appropriate (because the test result is statistically significant), use Cohen’s d to estimate the effect size. How might this test result be reported in the literature?
The calculated t-value of 1.100 is less than the critical t-value of 2.718, we fail to reject the null hypothesis.
To test the hypothesis that regular physical exercise improves academic achievement, we will conduct a two-sample t-test for independent samples. The null hypothesis is that there is no difference in the mean academic achievement scores between the treatment group (physical exercise) and the control group (no physical exercise).
Let's calculate the mean and standard deviation for each group:
Treatment group (physical exercise):
mean = (4 + 2.67 + 3.65 + 2.11 + 3.21 + 3.6) / 6 = 3.3833
standard deviation = 0.7589
Control group (no physical exercise):
mean = (3.75 + 2.74 + 3.42 + 1.67 + 3 + 3.25 + 2.65) / 7 = 3.0071
standard deviation = 0.7037
We can now calculate the t-statistic:
t = (3.3833 - 3.0071) / sqrt((0.7589^2 / 6) + (0.7037^2 / 7)) = 1.100
The degrees of freedom for this test are 6 + 7 - 2 = 11 (assuming equal variances).
Using a t-table or a t-distribution calculator with 11 degrees of freedom and a significance level of 0.01, we find that the critical t-value is ±2.718.
Since the calculated t-value of 1.100 is less than the critical t-value of 2.718, we fail to reject the null hypothesis. We do not have enough evidence to conclude that regular physical exercise improves academic achievement.
The p-value for this test can be calculated as the probability of getting a t-value as extreme as 1.100, assuming the null hypothesis is true. Using a t-distribution calculator with 11 degrees of freedom, we find that the p-value is 0.294 (rounded to three decimal places).
Since the test result is not statistically significant (p > 0.01), we do not need to report an effect size using Cohen's d.
This test result could be reported in the literature as follows: "A two-sample t-test for independent samples was conducted to examine the effect of regular physical exercise on academic achievement, while controlling for academic aptitude. Six pairs of college students with similar GPAs were randomly assigned to either a treatment group that attended daily exercise classes or a control group. The mean academic achievement score for the treatment group was 3.3833 with a standard deviation of 0.7589, while the mean academic achievement score for the control group was 3.0071 with a standard deviation of 0.7037. The t-test result was not statistically significant (t(11) = 1.100, p = 0.294), indicating that there is not enough evidence to conclude that regular physical exercise improves academic achievement."
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Solve for X
[tex]\frac{3x-2}{3x+1} =\frac{1}{2}[/tex]
The value of x is 5/3.
What is a fraction in math?A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator.
We have equation in fraction are:
[tex]\frac{3x-2}{3x+1} = \frac{1}{2}[/tex]
To solve the value of x
In the above equation, Solve by cross multiplication:
2(3x - 2) = 3x + 1
Open the bracket and multiply by 2 :
6x - 4 = 3x +1
Combine the like terms:
6x - 3x = 1 + 4
Add and subtract the terms:
3x = 5
x = 5/3
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A book club of 7 members meet at a local coffee shop. One week, 5 of the
members ordered a small cup of coffee and a muffin. The other 2 members
ordered a small cup of coffee and a piece of banana bread. The cost of a muffin,
including tax, is $3.51. The cost of piece of banana bread is $2. 16 more than
the cup of coffee. The total bill for the book club was $48. 60.
The cost of a small cup of coffee is $2.97, and the cost of a piece of banana bread is $5.13.
How to solveLet x represent the cost of a small coffee and y represent the cost of a piece of banana bread. We know:
Cost of muffin: $3.51
y = x + $2.16
5(x + $3.51) + 2(x + y) = $48.60
Substitute y with x + $2.16:
5(x + $3.51) + 2(x + (x + $2.16)) = $48.60
Solve for x:
9x + $21.87 = $48.60
9x = $26.73
x = $2.97
Find y:
y = x + $2.16
y = $2.97 + $2.16
y = $5.13
A slice of banana bread costs $5.13, while a small coffee costs $2.97.
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Prove that U(1, 1), Q(4,4), and A(6, 2) are the vertices of a right triangle. Â Use the following as a guide. Find the slopes of sides UQ, QA, and UA. Which segments are perpendicular? How do you know the segments are perpendicular? What are the lengths of each side? Use the Pythagorean Theorem to show that it is a right triangle. â
U(1,1), Q(4,4), and A(6,2) form a right triangle with UQ and QA being the legs and UA being the hypotenuse.
How do we know that UQ and QA are perpendicular?To determine whether U(1,1), Q(4,4), and A(6,2) form a right triangle, we will follow the given guide:
Find the slopes of sides UQ, QA, and UA:
Slope of UQ: (4-1)/(4-1) = 1Slope of QA: (2-4)/(6-4) = -1Slope of UA: (2-1)/(6-1) = 1/5Determine which segments are perpendicular and how we know they are perpendicular:
To determine if two lines are perpendicular, we need to check if their slopes are negative reciprocals of each other.
UQ and QA: Since the slope of UQ is 1 and the slope of QA is -1, we know that UQ and QA are perpendicular.UQ and UA: The slopes of UQ and UA are both positive, so they cannot be perpendicular.QA and UA: The slope of QA is -1, and the slope of UA is 1/5. Their product is -1/5, which is not -1, so QA and UA are not perpendicular.Find the lengths of each side:
Length of UQ: √[(4-1)² + (4-1)²] = √27Length of QA: √[(6-4)² + (2-4)²] = √8Length of UA: √[(6-1)² + (2-1)²] = √26Use the Pythagorean Theorem to show that it is a right triangle:
Since we have determined that UQ and QA are perpendicular, we can use the Pythagorean Theorem to show that it is a right triangle.
(Length of UQ)² + (Length of QA)² = (√27)² + (√8)² = 27 + 8 = 35(Length of UA)² = (√26)² = 26Since (Length of UA)² + (Length of QA)² = (Length of UQ)², we know that the triangle is a right triangle.
U(1,1), Q(4,4), and A(6,2) form a right triangle with UQ and QA being the legs and UA being the hypotenuse.
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Kennedy makes $7 per hour babysitting. Hours (h) dollars (d) 1 7 2 14 3 21 4 28 which equation represents the amount kennedy makes babysitting? 7 = hd h = 7d d = 7h h = d
The correct equation represents the amount Kennedy makes babysitting is,
⇒ d = 7h
We have to given that,
Kennedy makes $7 per hour babysitting.
Let us assume that,
'h' represent the number of hours
And, d represent amount in dollars.
Hence, By given condition, we get;
⇒ d = 7h
Thus, The correct equation represents the amount Kennedy makes babysitting is,
⇒ d = 7h
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The formula that Kennedy uses to calculate how much money she makes babysitting is:d = 7h
We have,
Kennedy makes $7 per hour babysitting.
let "d" represents the amount of dollars Kennedy makes, and "h" represents the number of hours she babysits.
Since Kennedy earns $7 per hour, the equation can be written as
d = 7h
which relates the dollars earned (d) to the number of hours worked (h).
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Solid cylinders A and B are similar and made from metal. 72.8% more metal is used to make cylinder B than cylinder A. The surface area of cylinder A is 700cm². Work out the surface area of cylinder B
If the surface area of cylinder A is 700cm², the surface area of cylinder B is 1612.8cm².
Since the two cylinders are similar, their dimensions are proportional to each other. Let the height and radius of cylinder A be h and r, respectively, and let the height and radius of cylinder B be kh and kr, respectively, where k is the scale factor.
Since cylinder B uses 72.8% more metal than cylinder A, we have:
Volume of cylinder B = 1.728 times the volume of cylinder A
Using the formula for the volume of a cylinder, we have:
π(kr)²(kh) = 1.728πr²h
Simplifying the equation, we get:
k³ = 1.728
k = 1.2
So the scale factor is 1.2. Therefore, the height and radius of cylinder B are 1.2 times those of cylinder A. Hence, we have:
Surface area of cylinder B = 2π(1.2r)² + 2π(1.2r)(1.2h)
= 2.304(2πrh)
= 2.304(700cm²)
= 1612.8cm²
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Give your answer accurate to 3 decimal places.
Claire starts at point A and runs east at a rate of 12 ft/sec. One minute later, Anna starts at A and runs north at a rate of 7 ft/sec. At what rate (in feet per second) is the distance between them changing after another minute?
______ft/sec
Solving for dz/dt, we get:
dz/dt ≈ 11.650 ft/sec.
So, after another minute, the distance between Claire and Anna is changing at a rate of approximately 11.650 ft/sec.
Hi there! To answer this question, we can use the Pythagorean theorem and implicit differentiation. Let x be the distance Claire runs east and y be the distance Anna runs north. After 1 minute, Claire has already run 12 * 60 = 720 ft. After another minute, x = 720 + 12t, and y = 7t.
Now, we can set up the Pythagorean theorem: x^2 + y^2 = z^2, where z is the distance between them. Substituting the expressions for x and y, we get (720 + 12t)^2 + (7t)^2 = z^2.
To find the rate at which the distance between them is changing (dz/dt), we need to differentiate both sides of the equation with respect to time, t:
2(720 + 12t)(12) + 2(7t)(7) = 2z(dz/dt).
Now, we can plug in the values for t = 2 minutes:
2(720 + 24)(12) + 2(14)(7) = 2z(dz/dt).
Simplifying, we get:
34560 + 392 = 2z(dz/dt).
After 2 minutes, Claire has run 12(120) = 1440 ft, and Anna has run 7(60) = 420 ft. Using the Pythagorean theorem, we can find z:
z = √(1440^2 + 420^2) ≈ 1500 ft.
Now we can find dz/dt:
34952 = 2(1500)(dz/dt).
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Alexandra rolls a standard six-sided die, numbered from 1 to 6. which word or phrase describes the probability that she will roll a number between 1 and 6 ( including 1 and 6)?
The probability that Alexandra will roll a number between 1 and 6, including 1 and 6, on a standard six-sided die can be described as "certain" or "100%."
Here's a step-by-step explanation:
1. A standard six-sided die has six faces, numbered from 1 to 6.
2. When rolling the die, each face has an equal chance of landing face up.
3. The question asks for the probability of rolling a number between 1 and 6, which includes all the possible outcomes (1, 2, 3, 4, 5, and 6).
4. Since all outcomes are covered, the probability of this event occurring is 100% or certain.
Therefore, the word or phrase that describes this probability is "certain" or "100%."
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A credit card had a APR of 33. 01% all of last year and compounded interest daily. What was the credit card’s effective interest rate last year?
The credit card's effective interest rate for the year is [tex]40.51%.[/tex]%
To solve this problemWe can use the following formula:
Effective annual interest rate is calculated as[tex](1 + APR/365)365 - 1.[/tex]
The interest is compounded everyday in this case and the APR is 33.01 percent. When we enter these values into the formula, we obtain:
Effective annual interest rate =[tex](1 + 0.3301/365)^365 - 1[/tex]
Effective annual interest rate =[tex]1.4051 - 1[/tex]
Effective annual interest rate =[tex]1.4051 - 1[/tex]
So the credit card's effective interest rate for the year is[tex]40.51%.[/tex]%
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The cost to produce x cases of Thingamabobs is given by the function C = 50x + 1000 where Cis in hundreds of dollars. If production is growing at a rate of 20 cases per day when the production level is x= 50 cases, find the rate at which the cost of production is changing.
The rate at which the cost of production is changing is 1000 hundred dollars per day or $100,000 per day.
To find the rate at which the cost of production is changing, we'll use the given cost function C = 50x + 1000, and the information that production is growing at a rate of 20 cases per day when x = 50 cases.
First, differentiate the cost function with respect to x to get the rate of change of the cost with respect to the number of cases produced (dC/dx):
dC/dx = 50
The derivative, 50, tells us that the cost increases by 50 hundred dollars for each additional case produced.
Now, we're given that dx/dt = 20 cases per day when x = 50 cases. To find dC/dt, the rate at which the cost of production is changing, multiply the rate of change of the cost with respect to the number of cases (dC/dx) by the rate of change of the number of cases with respect to time (dx/dt):
[tex]dC/dt = (dC/dx) × (dx/dt) = 50 × 20[/tex]
dC/dt = 1000
So, the rate at which the cost of production is changing is 1000 hundred dollars per day or $100,000 per day.
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I need help with this problem.
Please and thank you.
Answer:
Step-by-step explanation:
Geometry in circle p, m2=m1, m2= 4x + 35, m1= 9x +5 find :
need help!
Based on the given information, we can set up an equation using the fact that the measures of angles m1 and m2 are equal in circle P.
m1 = m2
Substituting the given values:
9x + 5 = 4x + 35
Solving for x:
9x - 4x = 35 - 5
5x = 30
x = 6
Now that we have found the value of x, we can substitute it back into the expressions for m1 and m2 to find their measures:
m1 = 9x + 5 = 9(6) + 5 = 59
m2 = 4x + 35 = 4(6) + 35 = 59
Therefore, both angles have a measure of 59 degrees.
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The picture has the instructions.
The Gross Profit Margin Ratio for Frontier Art Gallery is 69.38%, calculated by dividing the Gross Profit by Net Sales and multiplying the result by 100 to get the percentage.
Gross Profit Margin Ratio is calculated by dividing the Gross Profit by Net Sales and multiplying the result by 100 to get the percentage
Gross Profit = Net Sales - Cost of Merchandise Sold
Gross Profit = $62,481.45 - $19,123.49
Gross Profit = $43,357.96
Gross Profit Margin Ratio = (Gross Profit / Net Sales) x 100
Gross Profit Margin Ratio = ($43,357.96 / $62,481.45) x 100
Gross Profit Margin Ratio = 69.38%
Therefore, the Gross Profit Margin Ratio for Frontier Art Gallery is 69.38%.
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17. Cylinder A is similar to Cylinder B with a scale
factor of 3:7. If the surface area of Cylinder A
is 153 cm², find the surface area of Cylinder B.
The value of the surface area of Cylinder B is, 357 cm²
We have to given that;
Cylinder A is similar to Cylinder B with a scale factor of 3:7.
And, the surface area of Cylinder A.
Let us assume that,
The value of the surface area of Cylinder B is, y.
Hence, We can formulate;
3x : 7x = 153 : y
By comparing,
3x = 153
x = 51
Thus, The value of the surface area of Cylinder B is,
y = 7x
y = 7 x 51
y = 357 cm²
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What’s the answer? I need help:)
Answer:
x=180-90-54, y=180-x,z=90
Step-by-step explanation:
the sum of the degree of a triangle will equal 180. the sum of the degree of a line will equal 180.