What is the value of the expression?
9X3-9x
20
-5

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square