Determine the odds of drawing two aces if two cards are removed from a regular deck.

(regular deck has 52 cards)
(answer is 1: 220, but idk how to get it)

Evaluate the expression for the given value of the variable 7a - 4a for a =8

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?