39. If one student can complete the decorations for the prom in 5 days working alone, another student could do it in 3 days, and a third could
do it in 4 days, how long would it take them working together?

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.

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.

Write 5 in the form of a/b using integers to show it as a rational number