Question

which value of x will make $overleftrightarrow{ab}$ perpendicular to $overleftrightarrow{cd}$? (5x - 7)° (5y - 6)° a f (2y + 5)° (7x - 11)° c e d b a) 6 b) 9 c) 11 d) 13

Explanation:

Step1: Perpendicular angle sum to 90°

$(5x - 7) + (7x - 11) = 90$

Step2: Simplify and solve for x

$12x - 18 = 90 \implies 12x = 108 \implies x = 9$

Answer:

B. 9