What is 5√28 + √63 in simplest radical form?

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.