Why can you use a model to check your answer for a division problem

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?