Jeff does 5 questions every 2 3/8 hours. how many questions does he do every hour

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 median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?

Fill in the table with whole numbers to make 430 in five different ways