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Lina20 [59]
3 years ago
12

How do you solve -8= (×+11) ÷ -2

Mathematics
1 answer:
Elena-2011 [213]3 years ago
4 0

Answer:

Isolate x to get the answer.

Step-by-step explanation:

Cancel out the 2 on the left by multiplying both sides by 2.

-8 = (x + 11) / 2

turns into

-16 = (x + 11)

Next, cancel out the 11 by subtracting 11 on both sides.

-16 = (x + 11)

turns into

-27 = x

____________________________________________

Verify the answer:

([-27] + 11) / 2 = -8 ✔

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Hey so yeah this can be a challenging problem, Vol (V) is much easier to solve than surface area (SA), but I'll show you how it's done, my friend.
First of all, V (prism) = area of base (B) × h
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means solving the dimensions (sides) of that pesky polygon base (B) or lid.
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Now there are 360° in any circle, so:
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Also the area of each of the larger 5 triangles A(t) = 1/2b×h, and that area A(t) × 5 = area of whole pentagon base A(B)
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