100 POINTS WILL GIVE BRAINLIEST TOO FIRST RESPONSE
1 answer:
Answer:
58
Step-by-step explanation:
Angle D is an inscribed angle that intercepts arc ZBC, so the measure of angle D is half the measure of arc ZBC.
m<D = (1/2)[m(arc)ZBC]
10x + 16 = (1/2)(7x - 5 + 154)
20x + 32 = 7x + 149
13x = 117
x = 9
m(arc)BZ = 7x - 5 = 7(9) - 5 = 63 - 5 = 58
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