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3 years ago

Determine the value of x in this polygon.

Mathematics

1 answer:

OLEGan [10]3 years ago

3 0

Answer:

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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