2 of 6 Brian and Colin are marking exam papers.
Each set takes Brian 43 minutes and Colin
1 hour. Express the times Brian and Colin
take as a ratio in its simplest form.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?