Ocho veces un número es restado de dos veces su
recíproco. El resultado es 15. Halla el número.

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box

Can someone explain to me how to do

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air