Angel grant takes out a $150,000 mortgage this is a 30 year at $725 per month what is the total amount of interest that angel will pay on this mortgage

Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?

Adding and subtracting matricesfind the value of each variable. x = and y = would

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81