inadaze inadaze

21-12-2020
Mathematics

contestada

Find the measure of angle ACD and angle ABC.
options: ACD
A. 130.5
B. 59.5
C. 52.2
D. 10.6
options: ABC
A. 120.5
B. 59.5
C. 52.5
D. 10.5

Find the measure of angle ACD and angle ABCoptions ACDA 1305B 595C 522D 106options ABCA 1205B 595C 525D 105 class=

Respuesta :

kevxngyn kevxngyn

21-12-2020

2 (5x + 7) + 2 (3x - 1) = 180
5x + 7 + 3x - 1 = 90
8x + 6 = 90
8x = 84
x = 10.5
5 (10.5) + 7 = 59.5 (angle ABC)
angle ACD = 180 - 59.5 = 120.5

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