How would you write 1+1 in distributive property

6n^2-7n-75=0 solve by quadratic formula

Will mark name all segments skew to bc

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.