Notice that the triangle is a right triangle, because of the right angle. By the Pythagorean Theorem,

. Then

, d. 8 m
Start by getting all terms with x on one side and all terms without on the other.
6x+7=8x-15
subtract 6x from both sides
7=2x-15
add 15 to both sides
22=2x
divide both sides by 2
11=x
Answer:
2 6/25
Step-by-step explanation:
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