If a microscope has a series of three lenses that magnify individually 5x, 5x, and 7x, what is the total magnification of the microscope

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Solve the triangle. a = 21°, c = 105°, c = 5