Here's the question you clicked on:
elizabethann509
How do you find x?
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I'm awful at drawing on here... That top on is 6x and the other is 5x-20 and it's a 90 degree angle
6x+5x-20=90 11x=110 x=10
Make up an equation with the unknown angles on the left and 90 on the right. Then it becomes an algebra question.