Answer:
b = -16.77
Step-by-step explanation:
We could get a quick estimate from b/8 = -2: b is approximately -16.
For an exact answer, multiply both sides by 7.8: b = -16.77
Answer:46%
Step-by-step explanation:
Answer:
x = 28
Step-by-step explanation:
The 2 angles must add up to 180°, as definition of a line.
4x + 7 + 2x + 5 = 180
6x + 12 = 180
6x = 168
x = 28
Answer:
m<DCF = 155°
Step-by-step explanation:
m<DCF = m<D + m<E
m<DCF = 72° + 83°
m<DCF = 155°
Answer:
Step-by-step explanation:
Each central angle represents a side of the polygon.
<u>The number of sides is:</u>