Set up equation and solve. 1. Water/Wastewater Treatment Two tanks must have a total capacity of
400 gallons. If one tank needs to be twice the size of the other, how many
gallons should each tank hold?

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Here is another math questions. i will keep asking different questions. 4^2x=6