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Viefleur [7K]
3 years ago
6

What is 5x-2=9+ 3x+10​

Mathematics
2 answers:
Furkat [3]3 years ago
5 0
21 and a half!
Much love ❤️
ANTONII [103]3 years ago
3 0

Answer:21/2

Step-by-step explanation: first you subtract 3x from both sides ending up with 2x on the left side. 2x-2= 9+10. You’ll then combine like terms adding 9 and 10 having 2x-2=19 You then add 2 to both sides. 2x=21 then dived by 2 on both sides. It won’t simplify so the answer is x=21/2

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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'.

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

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