On a math test, 4 out of 20 students received an a. two students are randomly selected without replacement, and the first student has an a. what is the probability of the second student having an a?

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*