AAA batteries are advertised to have a life of about 9 hours of use. With certain level of confidence. It is advertised that the life is between 8 to 10 hours. If 9 hours is the point estimates then the margin of error is.

Someone . me. compound probability

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

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