(1) compare the decimals: .21 .28 *

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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.