The complete question in the attached figure
we know that
<span>The measure of the external angle is the semidifference of the arcs that it covers.
so
</span><span>m∠BED =(1/2)*[mAC-mBD]-------> solve for mBD
mBD=mAC-2</span>m∠BED
mBD=80-2*25--------> mBD=30°
the answer ismBD=30°
Answer:
b
Step-by-step explanation:
The square root of 25 is 5
Answer:
9mph
Step-by-step explanation:
Speed = distance/time
Given
Distance = 9 miles and
Time = 1 hr
Speed = 9/1
= 9mph