Wren has a 30% chance of being selected as the president of the school sports club and a 80% chance of being elected editor of the school magazine.

what is the probability that wren will be selected as the president of the sports club and will also be elected editor of the school magazine?

11%

15%

24%

50%

i tried 50% but i had gotten it wrong

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?

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Arecipe calls for 2 2/4 cups of raisins, but julie only has a 1/4 measuring cup. how many 1/4 cups is needed to measure out 2 2/4 cups of raisins?