Evaluate
2^-4/4^0
Write your answer as a fraction in simplest form

What is the value of this expression when b= 5 6 (2b-4)

How can (square root of 25) ^2 be rewritten?

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