Jesse bought a bag of nuts she gave 1/4 of it to one brother 1/6 to another 1/3 to a sister and kept the rest what fraction did he keep

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?

The only way to identify an intercept is as an ordered pair. true false

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length