The volume of a cone with helght h and radius r can be found using the formula V1arth3Find the volume of a cone with radius 8 feet and height 10 feet.

Answers

Answer 1

ANSWER:

669.87 cubic feet

STEP-BY-STEP EXPLANATION:

The volume of the cone is given as follows:

[tex]V=\frac{\pi\cdot r^2\cdot h}{3}[/tex]

We know the value of the radius and height, we replace and calculate the volume:

[tex]\begin{gathered} V=\frac{3.14\cdot8^2\cdot10}{3} \\ V=669.87ft^3 \end{gathered}[/tex]

Therefore, the volume of the cone is 669.87 cubic feet.


Related Questions

Which tree is growing faster?Tree 2Tree 1 is growing 2 week 2 4 6 8 10inches every week. inches5 10 15 20 25tallHint: First calculate the unit rate for Tree 2.Enter the number that belongs in the numerator.Unit Rate[?]=inches/week

Answers

Calculating the unit rate for Tree 2 we have the following

[tex]\text{Unit Rate }=\frac{5\text{ inches}}{2\text{ week}}\text{ }=\frac{10\text{ inches}}{4\text{ week}}\text{ }=\frac{15\text{ inches}}{6\text{ week}}[/tex]

When simplified the unit rate is

[tex]\frac{5}{2}\text{ inches/week}[/tex]

This is 2.5 inches per week. Compared to Tree 1,

On June 10, Trudy Polanski deposited $1260 in a savings account that pays 5.5% interest compounded daily. How much interest will the money earn in 60 days?

Answers

The answer will be $32,893.43 compound interest will the money earn in 60 days.

What is compound interest?

The interest on savings that is computed on both the initial principal and the interest accrued over time is known as compound interest. Compound interest is computed by multiplying the starting principal amount by one and the annual interest rate raised to the number of compound periods minus one. The final step is to deduct the initial loan principal from the calculated value.

When the amount compounds quarterly, it means that the amount compounds 2 times, n=12. We use this fact to derive the quarterly compound interest formula. Thus, the quarterly compound interest formula is:

A = P (1 + r/12)^12t

A = 1260(1+5.5/12) ^12

A = $32,893.43

Hence the interest will be $32,893.43.

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Alex’s paycheck was for $624.65. If Alex worked 32.5 hours, what is his rate of pay?

Answers

In order to know the rate of pay, we need to divide the value of the paycheck ($624.65) by the total hours Alex worked (32.5 hours):

$624.65/(32.5 hours) = $624.65/(32.50 hours) = $62465/(3250 hours)

Now, to solve this division, we can do as follows:

Therefore, the rate of pay is

$19.22/hour

InequalitiesEvaluate. Show your work or explain how you arrived at your answer.-|-34|

Answers

The value of -|-34| is -34

-|-34|

Apply absolute rule: |-a|=a,  a>0 =-34

The absolute value (or modulus)| x |  of a real number x is its non-negative value regardless of its sign. For example, 5 has an absolute value of 5, and 5 has an absolute value of 5. A number's absolute value can be conceived of as its distance from zero along the real number line.

Absolute values for real numbers occur in a wide range of mathematical contexts. Absolute values, for example, are defined for complex numbers, quaternions, ordered rings, fields, and vector spaces. In numerous mathematical and physical contexts, the absolute value is intimately related to the concepts of magnitude, distance, and norm.

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Determine the equation of the straight line that passes through the point (-2, -4)and is perpendicular to the line y +2x=1

Answers

If the line is perpendicular to:

[tex]y=-2x+1[/tex]

the we know that the slope will be the negative reciproc of the slope so the new slope is:

[tex]m=\frac{1}{2}[/tex]

So the equation is:

[tex]y=\frac{1}{2}x+b[/tex]

So we can replace the coordinate (-2,-4) and solve for b so:

[tex]\begin{gathered} -4=\frac{1}{2}(-2)+b \\ -4+1=b \\ -3=b \end{gathered}[/tex]

So the final equation is:

[tex]y=\frac{1}{2}x-3[/tex]

hello I'm having some difficulty on this question thank you for viewing it and helping me

Answers

The simple interest charged by the lender on Alonzo is $ 126 and the amount paid after 6 years is $ 826.

Principal amount of loan = $ 700

Time period = 6 years

Interest rate = 3 %

The simple interest is charged by the lender:

The interest will be:

SI = p × r × t / 100

Substitute the values, we get that:

SI = 700 × 3 × 6 / 100

SI = 7 × 3 × 6

SI = $ 126

The amount paid by Alonzo after 6 years will be:

Amount = $ 700 + $ 126

A = $ 826

Therefore, the simple interest charged by the lender on Alonzo is $ 126 and the amount paid after 6 years is $ 826.

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A clothing store is donating socks to various charities. The store gave 6 regular packs and 5 value packs to a homeless shelter, which contained a total of 163 pairs of socks. For foster children, the store donated 6 regular packs and 4 value packs, which equaled 146 pairs. How many pairs of socks are in each pack?

Answers

Let r and v be the number of socks ina regular pack and value pack, respectively. Since the store gave 6 regular packs and 5 value packs which contained 163 pair of socks, we can write

[tex]6r+5v=163[/tex]

Similarly, since the store donated 6 regular packs and 4 value pack which add 146 pair of socks, we can write

[tex]6r+4v=146[/tex]

Then, we have the following system of equations:

[tex]\begin{gathered} 6r+5v=163\ldots(a) \\ 6r+4v=146\ldots(b) \end{gathered}[/tex]

Solving by elimilation method.

By multiplying equation (b) by -1, we have an equivalent system of equations:

[tex]\begin{gathered} 6r+5v=163 \\ -6r-4v=-146 \end{gathered}[/tex]

Then, by adding both equations, we have

[tex]v=17[/tex]

Now, in order to obtain the number of socks in a regular pack, we must substitute the last result into equation (a). It yields,

[tex]6r+5(17)=163[/tex]

which gives

[tex]6r+85=163[/tex]

By subtracting 85 to both sides, we have

[tex]6r=78[/tex]

Then, r is given by

[tex]\begin{gathered} r=\frac{78}{6} \\ r=13 \end{gathered}[/tex]

Therefore, the answer is: There are 13 pairs of socks in each regular pack and 17 pairs in each value pack.

12 Stefanie is painting her bedroom. She can paint 12 1/3 square feet in 1/5 of an hour. How many square feet can she paint in one hour?

Answers

stephanie can paint 12 1/3 square feet in 1/5 of an hour. So,

[tex]undefined[/tex]

using the graph below wich graphs shows the mapping of ABCD to A'B'C'D for a dilation with center (0,0) and a scale factor of 3

Answers

The rule for a dilation with center at (0,0) and scale factor k is:

[tex](x,y)\rightarrow(kx,ky)[/tex]

Find the transformed vertices A'. B', C' and D' using this rule:

[tex]A(-2,3)\rightarrow A^{\prime}(3\times-2,3\times3)=A^{\prime}(-6,9)[/tex]

Similarly, the coordinates of B', C' and D' wil be:

[tex]\begin{gathered} B^{\prime}(6,12) \\ C^{\prime}(6,-3) \\ D^{\prime}(-9,3) \end{gathered}[/tex]

Plot A', B', C' and D' along with A, B, C and D:

Simplify.
Radical sign 45x
9

Answers

Answer:

20.12461179

Step-by-step explanation

Find the area of 11.4 and 7.4

Answers

let,

lenght (l)=11.4 , and width (b)=7.4

so,

[tex]\begin{gathered} \text{area}=l\times b \\ =11.4\times7.4 \\ =84.36 \end{gathered}[/tex]

area=84.36

what value of c would complete the square for the following trinomials?

Answers

[tex]x^2+6x+c\colon[/tex]

To find the value of c that will make the given expression a perfect square, we simply;

Step 1: Take the coefficient of x : that is, 6

Step 2: Divide the coefficient obtained in step 1 by 2: That is, 6/2 = 3

Step 3: Square the result in step 2: That is, 3^2 = 9

Hence, c = 9

The value of c in the first expression is 9.

Second Expression:

[tex]x^2-10x+c[/tex]

Step 1: 10 ( Do not bother yourself with the negative sign, just pick the number 10)

Step 2: 10/2 = 5

Step 3: 5^2 = 25

so, c = 25

Third expression:

[tex]x^2+32x+c[/tex]

Step 1: 32

Step 2: 32/2 = 16

Step 3: 16^2 = 256

So, c = 256

Fourth expression:

[tex]x^2-12x+c[/tex]

Step 1: 12

Step 2: 12/2 = 6

Step 3: 6^2 = 36

So, c = 36

Last expression:

[tex]x^2+8x+c[/tex]

Step 1: 8

Step 2: 8/2 = 4

Step 3: 4^2 = 16

so, c = 16

Determine whether the function is linear. If it is, State the rate of change.Question 8

Answers

Question 8.

Given the table:

x -7 -5 -3 -1 0

y 11 14 17 20 23

To determine if the function is linear, let's calculate to see if the rate of change is constant.

The x-values need to have a constant rate of change and the y-values need to have a constant rate of change.

If the function has a constant rate of change, then the functioncan be said to be linear.

To calculate the rate of change, we have:

[tex]\begin{gathered} x2-x1=-5\text{ - (-7) = -5 + 7 = 2} \\ \\ x3-x2=-3-(-5)=-3+5=2 \\ \\ x4-x3=-1-(-3)=-1+3=2 \\ \\ x5-x4=0-(-1)=0+1=1 \\ \\ We\text{ can se}e\text{ the x-values do not have a constant rate of change} \end{gathered}[/tex][tex]\begin{gathered} y2-y1=14-11=3 \\ \\ y3-y2=17-14=3 \\ \\ y4-y3=20-17=3 \\ \\ y5-y4=23-20=3 \\ \\ \text{The y-values have a constant rate of change} \end{gathered}[/tex]

Since the x-values do not have a constant rate of change that means the function is not linear.

ANSWER:

The table does not represent a linear function

1) 42,58, 67,55, 40, 69, 66, 51, 46, 48, 68 Minimum : Q: Q2: Q, Maximum :

Answers

EXPLANATION

Minimum

The first Quartile is the value separating the lower quarter and higher three - quarters of the data set.

The first quartile is computed by taking the median of the lower half of a sorted set.

Arranging terms in ascending order

40, 42 , 46, 48, 51, 55, 58, 66, 67, 68, 69

Here, we can see that:

Minimum = 40

Maximum = 69

Q2=55 (median)

Taking the lower half of the ascending set:

Counting the number of terms in the data set:

{40, 42 , 46, 48, 51, 55, 58, 66, 67, 68, 69}

{1, 2 , 3, 4, 5, 6, 7, 8, 9, 10, 11}

The number of terms in the data set is:

11

Since the number of terms is odd, take the elements below the middle one, that is, the lower 5 elements.

40, 42 , 46, 48, 51

Median of 40, 42 , 46, 48, 51:

The number of terms in the data set is 5.

Since the number of terms is odd, the median is the middle element of the sorted set.

Q1: 46

------------------------------------

Q3:

Since the number of terms is odd, take the elements above the middle one, that is, the upper 5 elements.

58, 66, 67, 68, 69

The number of terms in the data set is

5

Since the number of terms is odd, the median is the middle element of the sorted set.

Q3=67

------------------------------------------------------------------------------------

Interquartile Range:

The interquartile range is the difference of the first and third quartiles

We have that:

Q1=46

Q3=67

Computing the difference between 67 and 46:

67-46= 21

Interquartile Range=21

-------------------------------

Answers:

Minimum = 40

Q1=46

Q2=55 (median)

Q3=67

Maximum = 69

Interquartile Range=21

which expression can be used to find the length of the side of the triangle represented by the vertices (5,5) and (7,-3) on the graph?

Answers

In order to determine the correct expression for the length of the side, consider that the distance in between two points (x1,y1) and (x2,y2) is given by the following formula:

d = √((x2 - x1)² + (y2 - y1)²)

if (x1,y1) = (5,5) and (x2,y2) = (7,-3) you have for d:

d = √((7 - 5)²+(5 - (-3))²)

Name the quadrant in which each of the point lies. (-2,5)

Answers

The quadrants have the following division.

Since the points (-2, 5) is located on the negative side of the x-axis, and in the positive side of the y axis, it belongs to the second quadrant.

The answer is quadrant II

Write the equation of the line in standard form that passes through point P(-5,7) andPerpendicular to the equation of the line y=-x+2.

Answers

The given equation is

[tex]y=-x+2[/tex]

We have to find a new line perpendicular to the given line and must pass through P(-5,7).

First, we use the definition of perpendicularity for two lines.

[tex]m_1\cdot m_2=-1[/tex]

Where one of the slopes is equal to -1 because the coefficient of x in the given equation is -1. Let's find the other slope.

[tex]\begin{gathered} m\cdot(-1)=-1 \\ m=1 \end{gathered}[/tex]

This means the new perpendicular line has a slope of 1.

Now, we use the slope we found, the point P, and the point-slope formula, to find the equation.

[tex]\begin{gathered} y-y_1=m(x-x_1) \\ y-7=1(x-(-5)) \\ y-7=x+5 \\ y=x+5+7 \\ y=x+12 \end{gathered}[/tex]Therefore, the equation of the new perpendicular line is y = x + 12.

Complete the following equation. Your answers will be algebraic expressions. (a+bi)^2= _____ + 2abiHint: think of i as an ordinary variable and then replace i^2 with -1.

Answers

The given expression is:

[tex](a+ib)^2[/tex]

Expand to get:

[tex]\begin{gathered} (a+ib)^2=a^2+i^2b^2+2abi \\ =a^2-b^2+2abi \end{gathered}[/tex]

The value is as above since it is given that i^2=-1.

So the expansion is:

[tex](a+ib)^2=a^2-b^2+2abi[/tex]

The blank should be:

[tex]a^2-b^2[/tex]

can u help solve problem

Answers

To multiply the matixes, we'll look at their elements

[tex]A=\begin{bmatrix}{A_1} & {A_2} & {A_3} \\ {} & {} & {} \\ {} & {} & \end{bmatrix},\text{ B=}\begin{bmatrix}{B_1} & {} & {} \\ {B_2} & {} & \\ {B_3} & {} & {}\end{bmatrix}[/tex]

In order to get AB, we simply use the following formula

[tex]AB=A_1\cdot B_1+A_2\cdot B_2+A_3\cdot B_3[/tex]

In this case

[tex]AB=3\cdot1+4\cdot2+5\cdot3+6\cdot4=3+8+15+24=50[/tex]

Since both matrixes have 4 elements. Thus

[tex]AB=50[/tex]

The temperature of a solution in a science experiment is -6.2°C. Jesse wants to raise the temperature so that it is positive. (a) Give an example of a number of degrees Celsius by which Jesse could raise the temperature. (b) Write a equation to represent the solution.

Answers

Hello!

First, the temperature is -6.2ºC, and Jesse wants to raise it until be positive.

(a) Give an example of a number of degrees Celsius by which Jesse could raise the temperature.

If we add 6.2ºC, we will obtain a temperature equal to 0ºC, right? So, to the temperature be positive you can choose any temperature greater than 6.2º.

For example, I'll choose 15ºC.

(b) Write an equation to represent the solution. ​

We will write the current temperature plus the temperature that we will add, then we obtain the new temperature, look:

-6.2ºC + 15ºC = 8.8ºC

A grocery store surveys its customers and asks them to indicate (a) how many times they go to the grocerystore in a typical month, (b) their age (in years), (c) whether or not they have ever had to wait in line at thegrocery store more than 10 minutes, (d) the product they purchase most often at the grocery store, and (e)how long (in years) they have shopped at this particular grocery store. We would consider the customer'sage in years to be aand whether or not the customer has had to wait in linemore than 10 minutes to be aO numerical variable; categorical variableO categorical variable; categorical variableO numerical variable; numerical variableO explanatory variable; response variableO categorical variable; numerical variable

Answers

The age in years is a numerical variable because it can be listed in ascending or descending order. while whether or not the customer has had to wait in line more than 10 minutes is a categorica

Solve the system of equations:3x+y=6 2x+3y=11

Answers

Answer:

(1,3)

Explanation:

Given the system of equations:

[tex]f(x)=\begin{cases}3x+y=6 \\ 2x+3y=11\end{cases}[/tex]

To solve the system using the elimination method, multiply the first equation by 3.

[tex]\begin{gathered} f(x)=\begin{cases}9x+3y=18 \\ 2x+3y=11\end{cases} \\ \text{Subtract} \\ 7x=7 \\ \text{Divide both sides by 7} \\ \frac{7x}{7}=\frac{7}{7} \\ x=1 \end{gathered}[/tex]

Next, substitute x=1 into any of the equations to solve for y.

[tex]\begin{gathered} 3x+y=6 \\ 3(1)+y=6 \\ y=6-3 \\ y=3 \end{gathered}[/tex]

The solution to the system of equations is (x,y)=(1, 3).

Filling in Table (decreasing)Dependent QuantityA Helicopter flying at 3509 feet begins its descent. Itdescends at a rate of 41 feet per minuteIndependent Quantity0Complete the missing part of the tables, and make afunction that describes the Helicopter's decent133222Your answer: Not there yet, keep working3140Share with Class

Answers

(0,3509)

(1,3468)

(3,3386)

(7,3222)

(9,3140)

h=3509-41x

Explanation

Step 1

as we can see, the independent quantity is the time , and the dependent quantity is the heigth because it depends on the time.

then when time = o, t=o

[tex]0\Rightarrow3509\text{ ft}[/tex]

after 1 minute the helicopter has descended 41 ft, then

when time = 1, t=1

[tex]\begin{gathered} heigth_1=3509-(1\cdot41) \\ heigth_1=3509-41 \\ heigth_1=3468 \\ (1,3468) \end{gathered}[/tex]

when t=3

[tex]\begin{gathered} heigth_3=3509-(3\cdot41) \\ heigth_3=3509-123 \\ heigth_3=3386 \end{gathered}[/tex]

when heigth=3222

[tex]\begin{gathered} \text{heigth}_x=3509-(x\cdot41) \\ 3222=3509-41x \\ \text{subtract 3509 in both sides} \\ 3222-3509=3509-41x-3509 \\ -287=-41x \\ \text{divide both sides by -41} \\ \frac{-287}{-41}=\frac{-41x}{-41} \\ 7=x \\ \text{hence}(7,3222) \end{gathered}[/tex]

when heigth=3140

[tex]\begin{gathered} \text{heigth}_x=3509-(x\cdot41) \\ \text{3140}=3509-41x \\ subtract\text{ 3509 in both sides} \\ \text{3140-3509}=3509-41x-3509 \\ -369=-41x \\ \text{divide both sides by -41} \\ \frac{-369}{-41}=\frac{-41x}{-41} \\ 9=x \\ x=9,\text{then} \\ (9,3140) \end{gathered}[/tex]

Step 2

now, the equation is

[tex]\begin{gathered} \text{Heigth}=3509-41x \\ h=3509-41x \\ \text{where} \\ h\text{ is the heigth in ft and t is the time in minutes} \end{gathered}[/tex]

I hope this helps you

Solve fort.-t = 9(t – 10)t=Stuck? Watch a video or us

Answers

We are to solve for t in the equation given

To do this, we have to expand the bracket

Expanding, we have

-t = 9(t-10)

-t = 9t - 90

Collecting the like terms, we have

90 = 9t + t

90 = 10t

Dividing both sides by 10 to get t, we have

[tex]\begin{gathered} t=\frac{90}{10} \\ t=9 \end{gathered}[/tex]

Therefore the value of t is 9.

Jamie cut a rope into thirds.He used two of the pieces to make a swing

Answers

The complete length of the rope would be represented by 1

If he cut the rope into thirds, it means that each length woiuld be 1/3.

Given that he used two of the pieces to make a swing, it means that the length used in making the swing is

1/3 + 1/3 = 2/3

The left over rope is 1/3

Also, he used equal lengths of the left over rope on four picture frames. It means that the length used on each picture frame is

1/3 divided by 4

= 1/3 * 1/4 = 1/12

Thus, the fraction of the original rope that he used for each picture frame is 1/12. Option B is correct

ESFind the distance d(P. P2) between the points P, and P2-omennsP. = (-4.3)P2 = (3.2)ERE!(P, P2) =O(Simplify your answer. Type an exact answer using radicals as needed.)1 Guit2 Gunents

Answers

We have two points and we need to calculate the distance between them.

The points are P1(-4,3) and P2(3,2).

We can apply the following formula for the distance between points:

[tex]D=\sqrt{(x_2-x_1)^2}+(y_2-y_1)^2[/tex][tex]\begin{gathered} D=\sqrt{(3-(-4))^2}+(3-2)^2 \\ D=\sqrt{7^2+1^2}=\sqrt{49+1}=\sqrt{50}=\sqrt{(25\cdot2})=5\sqrt{2} \end{gathered}[/tex]

The answe is 5 times the square root of 2:

[tex]D=5\sqrt{2}[/tex]

The ratio of the amount of money Rachel saved to the amount of money Timothy saved was12 : 13. After Timothy spent $27, Rachel had 3 times as much as Timothy,A. How much did Rachel save?b How much did they save altogether at first?

Answers

For a)

Before

Rachel : Timothy

12 : 13

After

Rachel : Timothy

3 : 1

In order to have the same amount for Rachel

12: 4

Timothy

13units -4 units =9 units

9units=$27

1 unit=27/9

1unit = $3

For Rachel

Rachel saved $36

b)

Total units at first =12+13=25

If 1units is $3

25 units is 3x25

25 units is $75

They saved together 75

ANSWER

Rachel saved $36

They saved together 75

I need help with this math question I already solved the first question but I don't understand the second.

Answers

We can solve this question using cross multiplication,

If the number of students who sleep 6 hours a day increases by, this means we'll have a total of 6 students who sleep 6 hours a day.

We want the ratio to be same: 15%

Then we can write:

[tex]\frac{6}{N}=\frac{15\%}{100\%}[/tex]

6 students are the 15%, then N students are the 100%

Now solve for N:

[tex]\begin{gathered} 6·100=15·N \\ \end{gathered}[/tex][tex]N=\frac{600}{15}[/tex][tex]N=40[/tex]

The answer is 40 students are expected.

This is a reasonable answer, given that if the number of students who sleep 6 hours doubles, for the rate to remain the same, the total of students must double.

How many ways can we award a 1st, 2nd, and 3rd place prize among eight contestants?

Answers

We have:

- There are 8 choices for awarding first prize.

- Then there are 7 choices for awarding second prize.

- And there are 6 choices for awarding third prize.

Therefore, there are:

[tex]8\cdot7\cdot6=336\text{ ways}[/tex]

Answer: 336 ways

Determine the equation of the line that goes through the point (4, 4) with -1/4 slope. Enter your answer in slope-intercept form.Enter EquationPls see picture

Answers

The equation of a line in the slope intercept form is expressed as

y = mx + c

where

m represents slope

c represents y intercept

From the information given,

m = - 1/4

the line passes through the point (4, 4). This means that

x = 4, y = 4

We would find c by substituting m = - 1/4, x = 4 and y = 4 into the slope intercept equation. We have

4 = - 1/4 * 4 + c

4 = - 1 + c

Adding 1 to both sides of the equation,

4 + 1 = - 1 + 1 + c

c = 5

By substituting m = - 1/4 and c = 5 into the slope intercept equation, the equation of the line is

y = - x/4 + 5

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