A triangle has side lengths of (4b-6c)(4b−6c) centimeters, (9b-d)(9b−d) centimeters, and (3d-c)(3d−c) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?

answer: x=3 and y=4

step-by-step explanation:

answer: what are the following choices

b, i believe, but not sure.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2