46 is the sum of 9 and hector's savings. use the variable h to represent hector's savings

In the rectangle below ac=30 units what is de

Use circumcenter theorem to solve for the given values

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.