Find the difference between 7/10 and 14/15

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.