Four runners are training to compete as a team in a long race. at today’s practice, noah ran 5.124 miles, almirante ran 6.35 miles, jayla ran 7.42 miles, and diego ran 8.646. how much total did they run

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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.