Angle D=(7b+1) angle E=(2b+1) and angle F=(b+8) what is the measure of angle E
2 answers:
Answer:
<E = 35
Step-by-step explanation:
7b + 1 + 2b + 1 + b + 8 = 180
combine like terms
7 + 2 + 1 = 10
10b
1 + 1 + 8 = 10
10b + 10 = 180
substract 10 from 180
= 170
10b = 170
170 divided by 10
= 17
now plug in for b for angle E
2 (17) + 1
= 35
angleD=(7b+1)angle E=(2b+1)and angle F=(b+8)
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