What is the perimeter of a square with an area of 441 cm2?

Simplify the ratio 35:50

B/3+1/8=19. Solve for B.

Four less than the product of 5 and a number is equal to 9. Use the variable (w) for the unknown number

Mario's watch runs fast. In 1 day, it gains an hour. So in 12 days it gains 12 hours and is correct again. Julio's watch also runs fast. In 1 day, it gains 20 minutes. Suppose they both set their 12 hour watches correctly at 9:00 A. M on Monday.

9 over 5 divided by 5 over 2

A dog allergy test for people a 98% accuracy rate. Only 1% of the population has an allergy to dogs (actually it is much smaller than that!).

What is the reprocal of 8

Find the quotient 6 divided by 27 L 600 mL

By reaching into a bag that has letters A, B, and C, George will select three letters without replacing them. In how many possible ways could the letters be drawn?

2/15 of a mile paved in 20 minutes how much will be paved in an hour