If two sides of a triangle are 5 and 7 inches longer than the third side and the perimeter measures 21, find the length of each side of the triangle

Solve the system by the elimination method. 2x + y - 4 = 0 2x - y - 4 = 0 when you eliminate y, what is the resulting equation? a. x = 0 b.4x = -8 c.4x = 8

Acircle has a circumference of 28.36 units what is the diameter of the circle

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.