Seven students cut 5 and three-fourths inches of thread from a spool for a school project. What number represents the change in the amount of the thread on the spool?

Arectangular prism is 3 meters long, 6 meters wide, and has a height of 9 meters. what is its surface area?

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.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?