linseyamaker2961
09.07.2019 •
Mathematics
Which equation can be used to find the unknown length, a, in this triangle?
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Ответ:
Ответ:
A. 24
Step-by-step explanation:
Perimeter of triangle = 5x+5x+x-3 = 11x-3
Perimeter of square = 4* (x+15) = 4x+60
Given, Both perimeters are equal
11x-3=4x+60
11x-4x=60+3
7x=63
x=9
Length of the side of the square=x+15=9+15=24