A i think it could be wrong
Answer:
Option A. 
Step-by-step explanation:
we know that
The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite.

substitute the values


Answer:
x=-1/2, 7/2
Step-by-step explanation:
move all terms to the left side and set them equal to zero. then set eac factor to zero
35sq. units
Area of a triangle=0.5 base ×height
= 0.5(10)×7.
= 35
The length of the sides is 6