There were 20 apples in the bag. Rachel used 2/5 of the apples for a pie. Her mother used 1/2 of the apples for apple crisp. How many apples are left in
the bag?

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?