Astudent takes a 15 question a. true b. false quiz and guesses at every answer. what is the probability that the student gets exactly 10 questions right, given that the student got the first question right?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?