The perimeter of an isosceles trapezoid is 56 meters. The upper base is 8 meters shorter than the lower base x. Each leg is 6 meters shorter than the lower base. How long is each side of the trapezoid and what is the equation of the perimeter? Lower base:
Upper base:
Each leg:

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Evaluate cos2θ for cosθ = square root of 3/2

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.