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boyakko [2]
3 years ago
15

Which equation shows P=2l + 2w when solved for w?

Mathematics
2 answers:
larisa86 [58]3 years ago
7 0

Answer:

Is d. W=P-2L/2

Jlenok [28]3 years ago
3 0

Answer:

the answer is A

Step-by-step explanation:

when solving for a literal equation you wanna get the letter by itself

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find the value of the polygon. the polygon has 6 interior angles 2 of them are y and 4 of them are (2Y-20)
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First we need to determine what the 6 angles must add to. Turns out we use this formula

S = 180(n-2)

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S = 180(n-2)
S = 180(6-2)
S = 180(4)
S = 720

The six angles, whatever they are individually, add to 720 degrees. The six angles are y, y, 2y-20, 2y-20,  2y-20,  2y-20, <span> 

They add up and must be equal to 720, so let's set up the equation to get...

(y)+(y)+(</span>2y-20)+(2y-20)+(2y-20)+(<span>2y-20) = 720

Let's solve for y

</span>y+y+2y-20+2y-20+2y-20+2y-20 = 720

10y-80 = 720

10y-80+80 = 720+80

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10y/10 = 800/10

y = 80

Now that we know the value of y, we can figure out the six angles

angle1 = y = 80 degrees
<span>angle2 = y = 80 degrees
</span><span>angle3 = 2y-20 = 2*80-20 = 140 degrees
</span>angle4 = 2y-20 = 2*80-20 =<span> 140 degrees
</span><span>angle5 = 2y-20 = 2*80-20 = 140 degrees
</span>angle6 = 2y-20 = 2*80-20 =<span> 140 degrees
</span>
and that's all there is to it
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