How many square feet are in 88"x107"​

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me