I need two equivalent fractions for each

What is the length of the unknown leg in the right triangle ?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Ill mark the brainliest if you me with the these three questions 7,8,9