4 years ago

X= A-10 B-12 C-square root of 81 D-5

1 answer:

3 0

A. Line that equals 7 must be perpendicular due to the triangle being isosceles. Use Pythagorean theorem on one of the triangles to find that the missing length is 5. 5 can be multiplied by 2 because the triangles are congruent. So x=10.

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