Help needed writing this equation
6(x-7)=2x+2x+9

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

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?