The coordinates for the vertices of a patio are (1,5) (6,5) (6,1) and (1,1). each grid square has a length of 5 feet. find the perimeter in feet. never mind. figured it out.

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?