Check whether the given value of x is a solution to the equation. (x+4) = 20 where x = 48

Is the given value of x a solution to the equation?

What are the exclude value of mn+3m

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

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.