xvangie16eee xvangie16eee

06-09-2019
Mathematics

contestada

3. Find mZBDC
(-3x + 20°
5
(-2x + 55)
a. 290
b. 61°
c. 25°
d. 750

Respuesta :

meredith48034 meredith48034

07-09-2019

Answer:

-3x + 20 + -2x + 55= 180

-5x + 75= 180

-5x = 105

x = -21

-3(-21) + 20= 63 + 20 = 83°

-2(-21) + 55= 42 + 55 = 97°

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