Can someone please help ASAP

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

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.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply