Someone added me on snap and asked me why I was wearing a mask.

Find the solution of each of the following.

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

The longer leg of a 30-60-90 trangle is 18