3.6x = 5.5, what is it round to the nearest tenth?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Mon wants to make 5 lbs of the sugar syrup. how much water and how much sugar does he need… …to make 5% syrup?

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