A is the point (-5, 2) B is the point (7,-2)
C is the point (-2, 5)
a) Find the gradient of a line perpendicular to line AB.​

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.