Ms cooke bought 9/10 of a cake. she ate 2/5 of her cake. how much cake left.

Which of the following expressions are equivalent ?

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

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.