Find measure angle B ( m∠B )

71°

Step-by-step explanation:

1 side of a trapezoid is equal to 180, so put it equal to 180

8x + 7 +14x - 11 = 180

22x - 4 = 180

22x = 176

x=8

now plug in to ∠B

8(8) + 7 = 71°

Hi there!

The interior angles of a trapezoid always sum up to 360° because a trapezoid is a quadrilateral, so:

360° = (8x + 7)° + (5x + 18)° + (14x - 11)° + (10x + 13)°

Combine like terms:

360° = 37x + 27

Subtract both sides by 27:

333° = 37x

Divide both sides by 37:

x = 9°

Plug in this value of x into the expression for ∠B:

8(9) + 7 = 72 + 7 = 79°

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

11

step-by-step explanation:

32.50-7.50=25

225/25=11