If you answer this question you will get brainliest

whats 4 + 2

The reflexive property of congruence lets you say that ∠pqr ≅

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

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.