Answer: 2461.76 cubic feet
Step-by-step explanation:
\(V=\pi r^{2} h\\\\V=(\pi)(14^{2})(4)\\\\V\approx (3.14)(14^{2})(4)=\boxed{2461.76}\)
Supervisor: "your salary is $25,000 and you will be receiving a 2.5% pay increase this year. what will your new salary be?"
In case of a 2.5% increase in your pay which is now $25,000, your new salary will be $25,625.
First, you need to determine the percent increase i.e.2.5% of 25,000 (old salary),
2.5% x 25,000 = ?
2.5/100 x 25,000 = 625
So, the $625 would be the increased amount in your salary which is equal to 2.5% of your old salary (i.e. 25,000).
In order to find out the amount of your new salary that you will be receiving, you have to add the increased amount to the amount of your old salary, as follows:
amount of the new salary = amount of the old salary + percent increase
= $25,000 + $625
= $ 25,625
When an increase of 2.5% is made in your salary which is now $25,000, then your new salary becomes $25,625.
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Kyle found the product of two rational expressions and identified the excluded values of the expression. However, he made a mistake in his work and included an extra number in his list of excluded values. His work is shown below.
Select the step where Kyle made his first mistake. Then select the number that should not be included in the list of excluded values.
Answer:
Step-by-step explanation:
Mistake in step 3 the (2x+1) and the (x-1) both cancel out but the other binomials (x + 3) and (x - 3) are different so don't cancel out.
Step 3 should be 3(x-3) / 4(x+3)
3 should not be an excluded value.
The ages of five friends are 25, 36, 33, 36 and 30 how many of friends are older than the average (arithmetic mean) age?
Answer:
3 friends are older than the average.
Step-by-step explanation:
First find the mean. The mean can be found adding all the numbers in the set together and dividing by the amount of numbers in the giving set:
(25 + 36 + 33 + 36 + 30)/5 = (160)/5 = 32
The average age is 32. There are 3 friends that are older than the average (33 , 36 , 36, respectfully).
~
I need to show my work, can someone help w this?
Cross multiplying
20 × 5 = t × t
100 = 2t
Dividing 2 on the opposite side
100/2 = t
t = 50
The university needs to transport 421 fans from the stadium parking lot to the football game. If a van holds 10 people, how many fans will be in the partially full van?
Please help!!!!!!!!!
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Find tan A.
A. tanA = 12/5
B. tanA = 5/12
C. tanA = 13/5
D. tanA = 5/13
Answer:
tanA=BC/AC
BC=20
AC=48
so,BC/AC=20/48=5/12
The box plot represents the number of tickets sold for a school dance.
A horizontal line labeled Number of Tickets sold that starts at 8, with tick marks every one unit up to 30. The graph is titled Tickets Sold for A Dance. The box extends from 17 to 21 on the number line. A line in the box is at 19. The lines outside the box end at 10 and 27.
Which of the following is the appropriate measure of center for the data, and what is its value?
The mean is the best measure of center, and it equals 19.
The median is the best measure of center, and it equals 4.
The median is the best measure of center, and it equals 19.
The mean is the best measure of center, and it equals 4.
The appropriate measure of center for the data on the tickets sold is C. The median is the best measure of center, and it equals 19.
Why is the median best ?In a box plot, the median is represented by the horizontal line that divides the box into two equal parts. The median is the middle value of the dataset when it is ordered from smallest to largest.
The median is the best measure of center for a box plot. The median is represented by the line inside the box, which in this case is at 19 on the number line.
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Answer:
ccccccccccccccccccccccccc
Step-by-step explanation:
Joe and Susan share a sum of money in the ratio 1:5. What fraction of the money does Joe receive?
Answer:
1 / 6
Step-by-step explanation:
The amount of parts is 1 + 5 = 6 and Joe only receives 1 part so the fraction is 1 / 6.
Reuben L. Goldberg and His Machines
The Artist and His Work
Reuben (Rube) L. Goldberg was an American cartoonist. He is best known for drawing elaborate machines. His drawings showed machines with wheels, gears, handles, pails, and other interesting devices. The machines in Goldberg's drawings were designed to take a simple task and make it complex. The contraptions he drew 80 years ago were so funny that they continue to inspire young scientists and engineers today.
Goldberg's Career
Goldberg's cartoons appeared in several respected New York City newspapers, including the New York Evening Journal and the New York Evening Mail. The cartoonist also wrote a feature film called Soup to Nuts, which was the first film starring the Three Stooges. Goldberg's machines appear in the film.
How to Build a Cause-Effect Machine
Every year students build machines based on Goldberg's designs for school projects, for competitions, or simply for fun. Goldberg's machines operate based on cause and effect. Students and engineers of all ages can learn to build these elaborate cause-effect machines. The key to building one of these machines is to understand how to use gravity and force to push and pull objects along a path. Reading up on these concepts is a good place to start. After that, building the machines is all about having fun. Find a simple task for the machine to do. Then, find a complicated way for the machine to do it.
The Cause-Effect Machine in Popular Culture
Cause-effect machines are incredibly fun to watch. For this reason, they have found their way into Hollywood movies such as Back to the Future and The Goonies. The machines also inspired a board game for kids called Mouse Trap. Clearly, Goldberg's machines have a place in our popular culture.
4
Which section develops the idea that Goldberg's machines help inspire young scientists and engineers?
A.
How to Build a Cause-Effect Machine
B.
The Artist and His Work
C.
Goldberg's Career
D.
The Cause-Effect Machine in Popular Culture
Answer:
B
Step-by-step explanation:
The Artist and His Work
MATH EXPERTS PLEASE
evaluate the log expression
Answer:
0, 728
Step-by-step explanation:
㏒\(_{12}\) 1, 728 =
The base 12 logarithm of 1 is 0.
\(sort ( 0,728)\)
The list values are already in order.
0, 728
This size running track is usually called a 400-meter track. However, if a person ran as close to the "inside" as possible on the track, they would run less than 400 meters in one lap. How far away (in meters) from the inside border would someone have to run to make one lap equal exactly 400 meters?
Answer:
They would have to be in the very center of the track
Step-by-step explanation:
Look up how wide each lane of a track is and then times that by 2.5
What value of x makes this equation true?
x/3 - 3 = x/9 + 3
Answer:
x = 27
Step-by-step explanation:
hope this helps :)
what is the potential-energy function for f⃗ ? let u=0 when x=0 . express your answer in terms of α and x .
Potential energy can be defined as energy that is stored inside an object due to its position or configuration.The potential energy function for f⃗ is given by:-U = α (x^2 / 2)
Given a force vector f⃗ and its corresponding potential energy function u(x,y,z), the force is defined as the negative gradient of the potential energy function. In order to get the potential energy function for f⃗ , we need to integrate force with respect to distance. We know that force is equivalent to the derivative of potential energy with respect to distance, so we can use the fundamental theorem of calculus to solve for u(x).We are given that u=0 when x=0, so we can define our initial condition. Using the above equation, we get:-du/dx = f(x)⇒ du = -f(x)dx Integrating both sides, we get: u(x) = -∫f(x)dx + Cwhere C is a constant of integration. We can solve for C using our initial condition: u(x=0) = 0 = CSo, the potential energy function for f⃗ is:u(x) = -∫f(x)dx + 0Now, we can express f⃗ in terms of α and x, which yields :f⃗ = -αxî where î is the unit vector in the x-direction. Substituting this value for f⃗ into our equation for potential energy function, we get:u(x) = -∫(-αx)dx = 1/2αx² + C.
Therefore, the potential-energy function for f⃗ when u=0 at x=0, and expressed in terms of α and x, is given by u(x) = 1/2αx².
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Study the following program:
x = 1 while True: if x % 5 = = 0: break print(x) x + = 1 What will be the output of this code?
The output of the following code snippet will be 1, 2, 3, and 4.
The reason is that the while loop runs infinitely until the break statement is executed. The break statement terminates the loop if the value of x is divisible by 5. However, the value of x is incremented at each iteration of the loop before checking the condition. Here is the step-by-step explanation of how this code works:
Step 1: Assign 1 to x.x = 1
Step 2: Start an infinite loop using the while True statement.
Step 3: Check if the value of x is divisible by 5 using the if x % 5 == 0 statement.
Step 4: If the value of x is divisible by 5, terminate the loop using the break statement.
Step 5: Print the value of x to the console using the print(x) statement.
Step 6: Increment the value of x by 1 using the x += 1 statement.
Step 7: Repeat steps 3-6 until the break statement is executed.
Therefore, the output of the code will be: 1 2 3 4.
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How do I do this (with steps is preferred):
Suppose you know that x = -2 is a zero of p(x) = 4x^3 + 10x^2 - 6x - 20. Use synthetic division to factor the polynomial and find the remaining zeros.
The remaining zero of the polynomial 4x³ + 10x² - 6x - 20 is the quotient 4x² + 2x - 10 derived using synthetic division.
How to calculate for the zero of the polynomial using the synthetic divisionThe polynomial p(x) = 4x³ + 10x² - 6x - 20 having a zero x = -2 implies that x + 2 is a factor and has another factor derived by dividing p(x) = 4x³ + 10x² - 6x - 20 by x + 2.
we shall derive the other factor using the synthetic division as follows;
divide the first term 4x³ of the polynomial by x (of x + 2) to give 4x²,
multiply x + 2 by 4x² to give 4x³ + 8x²
then subtract 4x³ + 8x² from 4x³ + 10x² - 6x - 20 to give 2x² - 6x - 20
divide 2x² (of 2x² - 6x - 20) by x (of x + 2) to give 2x
multiply x + 2 by 2x to give 2x² + 4x
then subtract 2x² + 4x from 2x² - 6x - 20 to give -10x - 20
divide 10x (of -10x - 20) by x (of x + 2) to give -10
multiply x + 2 by -10 to give -10x - 20
then subtract -10x - 20 from -10x - 20 to give a remainder of zero.
Hence, the results 4x², 2x, and -10 are the terms of the quotient 4x² + 2x - 10 and forms the remaining zeros of the polynomial p(x) = 4x³ + 10x² - 6x - 20.
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PLS HELP REALLY NEED HELP!!!!!!!!!!!!!!!
Answer:
the answer is A
Step-by-step explanation:
Answer:
A. - ∞ < x < ∞
Step-by-step explanation:
part of a multiplication table is below. complete the pattern in the multiplication table. click each dot on the image to select an answer. a partial multiplication table with 3 rows and 3 columns. the first row reads 40, 45, 50. the second row reads an unknown number, 54, 60. the third row reads 56, an unknown number, 70. stuck?.
the completed multiplication table is: 40 45 50 ,72 54 60 and 56 90 70 .by using common factor logic we can solve this question.
what is common factor ?
A common factor is a number that divides evenly into two or more other numbers. For example, the common factors of 12 and 18 are 1, 2, 3, and 6, because all of these numbers divide evenly into both 12 and 18.
In the given question,
From the given table, we can see that:
The first row reads 40, 45, 50 (which are multiples of 5).
The second row has an unknown number (let's call it x), 54, and 60.
The third row reads 56, an unknown number (let's call it y), 70 (which are also multiples of 7).
To find the missing numbers, we can use the fact that multiplication is commutative, meaning that the order of the factors does not matter. Therefore, we can fill in the missing numbers by looking for factors that are common to both the row and column headers.
Starting with the second row, we can see that the common factor between x and 54 is 9, since 9 x 6 = 54 and 9 x x = ?. So, the missing number in the second row is 9 x 10 = 90.
Moving on to the first column, we can see that the common factor between 40 and 56 is 8, since 8 x 5 = 40 and 8 x 7 = 56. So, the missing number in the second row, first column is 8 x 9 = 72.
Finally, we can find the missing number in the first row, second column by finding the common factor between 45 and 60, which is 15, since 15 x 3 = 45 and 15 x 4 = 60. So, the missing number in the first row, second column is 15 x 5 = 75.
Therefore, the completed multiplication table is:
40 45 50
72 54 60
56 90 70
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the average daily rainfall for the past week in the town of hope cove is normally distributed, with a mean rainfall of 2.1 inches and a standard deviation of 0.2 inches. if the distribution is normal, what percent of data lies between 1.9 inches and 2.3 inches of rainfall?
The percentage of data that falls between 1.9 inches and 2.3 inches of rainfall is roughly (D) 68% if the distribution is normal.
What is the percentage?In essence, percentages are fractions with 100 as the denominator.
We place the percent symbol (%) next to the number to indicate that the number is a percentage.
For instance, you would have received a 75% grade if you answered 75 out of 100 questions correctly on a test (75/100).
So, we determine each's z-score:
z-score = (x-mean)/SD
z1 = (1.9-2.1)/0.2 = -1
z2 = (2.3-2.1)/0.2 = 1
Then, the percentage we want to determine is:
P(-1<x<1)
For this, we utilize the normal scoring table:
P(-1<x<1) = P(x<1) -P(x<-1) = 0.68269
= 68%
Therefore, the percentage of data that falls between 1.9 inches and 2.3 inches of rainfall is roughly (D) 68% if the distribution is normal.
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Complete question:
The average daily rainfall for the past week in the town of Hope Cove is normally distributed, with a mean rainfall of 2.1 inches and a standard deviation of 0.2 inches. If the distribution is normal, what percent of data lies between 1.9 inches and 2.3 inches of rainfall? a) 95% b) 99.7% c) 34% d) 68%
Use Mean value theorem to prove √6a + 3 < a + 2 for all a > 1.
Using methods other than the Mean Value Theorem will yield no marks. {Show all reasoning).
√6a + 3 < a + 2, we have proven that √6a + 3 < a + 2 for all a > 1 using the Mean Value Theorem.
To use the Mean Value Theorem to prove √6a + 3 < a + 2 for all a > 1, we first note that the function f(x) = √6x + 3 is continuous on the interval [1,a].
Next, we need to find a point c in the interval (1,a) such that the slope of the line connecting (1,f(1)) and (a,f(a)) is equal to the slope of the tangent line to f(x) at c.
The slope of the line connecting (1,f(1)) and (a,f(a)) is given by:
(f(a) - f(1)) / (a - 1) = (√6a + 3 - √9) / (a - 1) = (√6a) / (a - 1)
To find the slope of the tangent line to f(x) at c, we first find the derivative of f(x):
f'(x) = (1/2) * (6x + 3)^(-1/2) * 6 = 3 / √(6x + 3)
Then, we evaluate f'(c) to get the slope of the tangent line at c:
f'(c) = 3 / √(6c + 3)
Now, by the Mean Value Theorem, there exists a point c in (1,a) such that:
f'(c) = (√6a) / (a - 1)
Setting these two expressions for f'(c) equal to each other, we get:
3 / √(6c + 3) = (√6a) / (a - 1)
Solving for c, we get:
c = (a + 2) / 6
(Note that c is indeed in (1,a) since a > 1.)
Now, we can evaluate f(a) and f(1) and use the Mean Value Theorem to show that:
√6a + 3 - √9 < (√6a) / (a - 1) * (a - 1)
Simplifying, we get:
√6a + 3 < a + 2
as desired.
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When 2x^2-20x+39=9 is written in the form (x-p)^2 =q, what is the value of q?
A) 10
B) 9
C) 5
D) -30
\(2x^2 - 20x+39=9 \\ \\ 2x^2 - 20x=-30 \\ \\ x^2 -10x=-15 \\ \\ x^2 - 10x+25=10 \\ \\ (x-5)^2 = 10 \\ \\ \implies \boxed{q=10}\)
Solve the following quadratic by
completing the square.
y = x2 - 6x +2
Answer: \(3 \pm \sqrt{7}\)
Step-by-step explanation:
\(1) \text{ } x^{2}-6x+2=0\\\\2) \text{ } x^{2}-6x=-2\\\\3) \text{ } x^{2}-6x+\left(\frac{-6}{2} \right)^{2}=-2+\left(\frac{-6}{2} \right)^{2}=7\\\\4) \text{ } (x-3)^{2}=7\\\\5) \text{ } x-3 =\pm \sqrt{7} \longrightarrow \boxed{3 \pm \sqrt{7}}\)
An ice cream shop offers 6 different flavors of ice cream and 11
different toppings. How many choices are possible for a single
serving of ice cream with one topping?
Answer:
66
Step-by-step explanation:
Since these two events are independent, multiply the two probabilities together:
6*11 = 66 (choices)
Write an equation for this line.
Answer:
y = 3x - 6
Step-by-step explanation:
The equation is y = mx + b
m = the slope
b = y-intercept
Slope = rise/run or (y2 - y1) / (x2 - x1)
Let's pick 2 points (0, -6) (2,0)
We see the y increase by 6 and the x increase by 2, so the slope is
m = 6/2 = 3
y-intercept located at (0, -6)
So, the equation is
y = 3x - 6
7.) Dafne gave away 3 more than half
of her apples. She gave away 17
apples in all. How many apples did
Dafne have originally?
Answer:28
Step-by-step explanation: 17-3 = 14 and 14 is half of 28.
Answer:
Dafne originally had 28 apples.
Step-by-step explanation:
Dafne gave away 3 more than half of her apples, and she gave away 17 apples.
So the first step would be to find half of the original number of apples:
17-3=14
Now all we have to do is multiply by two:
14x2=28
Help yalll I really need help major time
Answer:
Annalise is correct because the outputs are closest when x = 1.35
Step-by-step explanation:
The solution to the equation 1/(x-1) = x² + 1 means the one x value that will make both sides equal. If we look at the table, notice how when x = 1.35, f(x) values are closest to each other for both equations, signifying that x = 1.35 is approximately the solution. Thus, Annalise is correct.
what is 8x3(5+80)(73x373)-5
Answer:
55547155
Step-by-step explanation:
Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. then find the region of the area. y=1/x, y=1/x^2, x=6
The integral for finding the area of the region is:
A = ∫[lower bound]^[upper bound] [rightmost bound] dy
A = ∫[1/6]^∞ [6] dy
To sketch the region enclosed by the curves and determine whether to integrate with respect to x or y, let's analyze the given equations:
y = 1/x
y = 1/x^2
x = 6
To begin, let's plot these curves on a coordinate plane:
First, we can observe that both equations involve hyperbolas. The equation y = 1/x represents a hyperbola that passes through the points (1,1), (2,0.5), (-1,-1), etc. The equation y = 1/x^2 represents a hyperbola that passes through the points (1,1), (2,0.25), (-1,1), etc.
Next, the equation x = 6 represents a vertical line passing through the point (6,0) on the x-axis.
Now, to determine the enclosed region, we need to find the limits of integration.
Since the curves intersect at certain points, we need to find these points of intersection. Equating the two equations for y and solving, we get:
1/x = 1/x^2
Multiplying both sides by x^2 yields:
x = 1
Hence, the curves intersect at x = 1.
Therefore, the region enclosed by the curves is bounded by the following:
The curve y = 1/x,
The curve y = 1/x^2,
The vertical line x = 6, and
The x-axis.
To determine whether to integrate with respect to x or y, we need to consider the orientation of the curves. In this case, the curves are defined in terms of y = f(x). Thus, it is more convenient to integrate with respect to y.
To find the area of the region, we need to set up the integral bounds. Since the region is bounded by the curves y = 1/x and y = 1/x^2, we need to find the limits of y.
The lower bound is determined by the curve y = 1/x^2, and the upper bound is determined by the curve y = 1/x. The vertical line x = 6 acts as the rightmost boundary.
Therefore, the integral for finding the area of the region is:
A = ∫[lower bound]^[upper bound] [rightmost bound] dy
A = ∫[1/6]^∞ [6] dy
Now, we can proceed with evaluating this integral to find the area of the enclosed region.
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1. Circle the largest number.
|- 45 and 6
Answer:
6 is larger unless -45 is in brackets then its bigger
Step-by-step explanation:
No negative number is bigger than positive numbers, unless it has brackets
Answer:
-45
Step-by-step explanation:
The negative is in brackets making it positive and 45 is greater than 6
Whats the slope of the image shown below?
Answer:
Step-by-step explanation:
The slope of the line would be two. When you put the coordinates in the point-slope formula, it would be 5 - 3 over 4 - 0, which equals 2. Therefore, the slope is two.