Two sides of a triangle measure 15 centimeters and 12 centimeters. The included angle measures 640. To the nearest tenth, what is the length of the third side?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Is there an x intercept in the equation 60*1.15^x

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