−3x+y2÷(−1)−3x+y2÷(−1) when x=8x=8 and y=5y=5.

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2