The sales tax for an item was $25.20 and it cost $360 before tax. find the sales tax rate. write your answer as a percentage.

Add the fractions and simplify 1/2+ 1/3

Use circumcenter theorem to solve for the given values

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