water from industrial plants must be treated before entering the sewer system. water that is too acidic or too basic will harm the pipes. A semiconductor manufacturer must adjust the pH of any waste water from the process to between 4.0 and 10.0

This is fractions casey shared a pizza with some friends.they each ate 1 third of the pizza. how many people shared the pizza

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?