HELP FAST PLEASE! (marking brainliest!!!) Prove that if three of the four angles formed by two intersecting lines are equal then the two lines are perpendicular.
Please keep it simple.

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

no

step-by-step explanation:

answer

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm