Answer:
m<BAC= 110 degrees
Step-by-step explanation:
Since the outside angle m<BCD is 130 degrees the inside angle m<BCA would be 50 degrees. At this point you should know that inside angles of a triangle add up to 180 degrees so add the two angles that you know then subtract from 180 degrees. 50+20= 70 degrees and 180-70= 110 degrees.
2a is 2 x a
Substitute a =5
2 x 5 =10
Now we have:
10^2-c
Substitute c = 10
(2 - 10 = - 8)
So,it's now 10^ - 8 (10 to the power of - 8)
Ans: 10^ - 8 (or 1 x 10^ -8)
Hope this helps!
That would be 57 because .85 rounds up to one more place.
The correct answer would be D I think
