The measurement of one angle of a right triangle is 42°. what is the measurement of the third angle? enter your answer in the box. °

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?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?