Can someone explain to me how to find the length and the width?

Lines p and q intersect. find the value of b. show your work. cite any theorems you use.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0