Answer:
X=14.4
Explanation:
The equation for this problem is (a)(x)=b^2. So substituting the equation,
(10)(x)=(12)^2. Isolating x, we get x=14.4. to check our answer we solve the equation. (10)(14.4)=(12)^2 --> 144=12^2 --> 144=144. The statement is true.