The answer is 18. The two sides are the same length, so you set the two sides equal to each other and solve for x. After finding x, you plug in the number into the base expression and you get the base length.
Answer:
M is negative
Step-by-step explanation:
The equation of the circle:

(h, k) - center
r - radius
We have:

Substitute:

The answer would be a. 288. hope that helped
Answer:
8
Step-by-step explanation:
0.5x-7=3
add 7 to both sides
0.5x=4
multiply both sides by 2
x=8