Please keep it simple, but show the answer. Victor runs 3 laps around the track every 5 minutes. Complete the table to show the relationship between the number of laps and time spent running. Write your answers in the blanks.

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?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

What are the values of each variable in the diagram below?