3 years ago

I need help on this...

Mathematics

1 answer:

Jobisdone [24]3 years ago

6 0

Answer:

It is B 36

Step-by-step explanation:

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900 mins

Step-by-step explanation:

basic charge = 20$

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every 10 minutes = 2$

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3 years ago

Which equation matches the graph of the absolute value function seen here?

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3 years ago

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Evaluate the following expressions in 17-18 when x=5<br> and y=-3.<br> 71 y] – xy2

kramer

Answer:

-183

Step-by-step explanation:

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3 years ago

Find the surface area of a cylinder. Solve this formula for h. Then find the height of the cylinder if the surface are is 251.2

mezya [45]

Answer:

The formula for 'h' is $\frac{S.A.}{2\pi r}-r$ .

The height of the cylinder is 3 in.

Step-by-step explanation:

Given,

Surface Area of Cylinder = 251.2 sq. in.

Radius = 5 in

We have to find out the height of the cylinder.

Solution,

We know that the Surface area of cylinder is given as;

$Surface\ Area = 2\pi r(h+r)$

Here 'r' is the radius and 'h' is the height.

We have to solve this for 'h'.

$\frac{S.A.}{2\pi r}=h+r\\\\h=\frac{S.A.}{2\pi r}-r$

Hence The formula for 'h' is $\frac{S.A.}{2\pi r}-r$ .

Now we solve for 'h'.

Since $h=\frac{S.A.}{2\pi r}-r$

On putting the given values, we get;

$h=\frac{251.2}{2\times3.14\times5}-5=8-5=3\ in$

Hence The height of the cylinder is 3 in.

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3 years ago