Amodel rocket is launched from a raised platform at a speed of 144 feet per second. its height in feet is given by h(t) = -16t 2 + 144t + 20 (t = seconds after launch). after how many seconds does the object reach its maximum height? 20 seconds 6.5 seconds 2.25 seconds 4.5 seconds

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.