Question

The side lengths of a triangle are given by the expressions 2x + 5, 5x + 4, and 3x + 4. Find the perimeter of the figure if

X=7

A. 75 units
B. 54 units
C. 62 units
D. 83 units

Answer 1

d. 83 units because 19 + 39 +25 = 83

Answer 2

option D

Explanation:

perimeter of a triangle=a+b+c

a=2x + 5

b=5x + 4

c= 3x+4

perimeter of a triangle= 2(7)+5 +5(7)+4 +3(7) +4

perimeter of a triangle=19+39+25

perimeter of a triangle= 83