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3 years ago

What is the volume of a right circular cylinder with a base diameter of 18yd. And a height of 3yd.

Mathematics

1 answer:

saveliy_v [14]3 years ago

8 0

Answer:

$Volume=254$ to the nearest cubic yard.

Step-by-step explanation:

The volume of a right circular cylinder can be calculated using the formula;

$Volume=\pi r^2h$ .

The diameter of the base is given to us. We divide it into two to obtain the radius.

$r=\frac{18}{2}=9yd$ and also the height of the cylinder is $h=3yd$ .

We substitute these values into the formula to obtain;

$Volume=9^2\times 3\pi yd^3$

$Volume=243\pi yd^3$

$Volume=763.4yd^3$

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13. Mis the midpoint of PR, PM = 2x + 5, and MR = 4x – 7. Solve for x and find PR.

enyata [817]

Add 2x + 5 and 4x - 7

Then you isolate the variable or “get rid of” the numbers that re stopping you from getting “x”.

By doing the inverse operation.

If you add ___ you subtract ____ it form itself

If you subtract ___ you add ____ To itself.

So you Cancel out by getting rid of the other numbers.

Same thing with multiplying and dividing.

If you multiply ____ you divide___ but don’t divide “x”

Only the integer.

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3 years ago

How to Factor 4p^2+4p-5

Anarel [89]

4p^2 + 4p - 5

As the expression cannot be factored in it's current form, we need to check if splitting the middle term is possible.

List factors of -20.

-5 * 4

5 * -4

-10 * 2

10 * -2

-20 * 1

20 * -1

None of the factors added together result in positive 4.

Because splitting the middle term is not possible, and we cannot simplify this expression any further:

This expression cannot be fully factored.

7 0

3 years ago

3 folders cost $2.91 which equation would help determine the cost of 2 folders

eimsori [14]

Answer:

The equation that will determine the cost of two folders is; 3x = 2× $2.91

and the cost of the 2 folders is $1.94

Step-by-step explanation:

To solve this problem, we will follow the steps below;

Using proportion;

Let x be the cost of 2 folders

3 folders = $2.91

2 folders = x

Cross-multiply

3x = 2× $2.91

The equation that will determine the cost of two folders is

3x = 2× $2.91

We can go ahead and solve

3x = $5.82

Divide both-side of the equation by 3

$\frac{3x}{3}$ = $\frac{5.82}{3}$

x = $ 1.94

The cost of 2 folders is $1.94

5 0

3 years ago

Read 2 more answers

Choose the equation below that represents the line passing through the point (1, -4) with a slope of 1/2

tatiyna

For this case we have that by definition, the line equation of the slope-intersection form is given by:

$y = mx + b$

Where:

m: It's the slope

b: It is the cut-off point with the y axis

According to the statement we have:

$m = \frac {1} {2}$

Thus, the equation is of the form:

$y = \frac {1} {2} x + b$

We substitute the given point and find "b":

$-4 = \frac {1} {2} (1) + b\\-4 = \frac {1} {2} + b\\-4- \frac {1} {2} = b\\b = - \frac {9} {2}$

Finally, the equation is of the form:

$y = \frac {1} {2} x- \frac {9} {2}$

Answer:

$y = \frac {1} {2} x- \frac {9} {2}$

6 0

3 years ago

Standard form of two hundred ten million, sixty four thousand,fifty

neonofarm [45]

We have to write the standard form of : two hundred ten million, sixty four thousand , fifty.
210 * 10,000,000 + 64 * 10,000 + 50
Answer:
The standard form is 210,064,050.

7 0

3 years ago