Please help! And 20 points! :3 1. There are 300 students at the school Bill attends. Predict how many students prefer pepperoni pizza if 6 students out of 30 students say pepperoni pizza is their favorite type of pizza.

2. 25 students took a test, and 20 had passing scores. What percent of students passed the test?

3. If one out of 8 students has a cat, predict how many have a cat out of in a school with 400 students.

Given that abcd is a parallelogram solve for m

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?

Place the following steps in order to complete the square and solve the quadratic equation,