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belka [17]
3 years ago
6

Determine the value of x in this polygon.

Mathematics
1 answer:
OLEGan [10]3 years ago
3 0

Answer:

<h2>x = 23.5</h2>

Step-by-step explanation:

It's the trapezoid.

We know: the sum of the angle measures at one leg of a trapezoid is 180°.

Therefore we have the equation:

(x+12.5)+(6x+3)=180    <em>combine like terms</em>

(x+6x)+(12.5+3)=180

7x+15.5=180         <em>subtract 15.5 from both sides</em>

7x=164.5   <em>divide both sides by 7</em>

x=23.5

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