Huilan is 15 years older than thomas. the sum of their ages is 109 . what is thomas's age?

If square root x = -7, then x= -49 true or false

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp