Mr. Jordan has 20 times as many pencils as Clara. The whole school has 300 times as many pencils as Clara. If Clara has 3 pencils, how many pencils does Mr. Jordan have? How many pencils does the whole school have?

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

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

If rt is greater than ba, which statement must be true ?