Three postal workers can sort a stack of mail in 20 minutes, 25 minutes, and 100 minutes, respectively. Find how long it takes them to sort the mail if all three work together.

The answer must be a whole number

Nadia has a can of vegetable with a mass of 411 grams what is the mass in centigrams

Select the three expressions that are equivalent to 49.

Mr. Webster is buying a carpet for an exercise room in his basement the room will have an area of 230 ft.².

20% as a fraction in simplest form explain

Factor 8x^2 + 10x + 2

What is 6 minus negative 4 what is 3 plus negative 8 is 6 minus 5

9. Alice had 2/3 of a book to read by Friday. She finished 1/3 of this today. How much does she now have left to read?

You are going to rent a car to drive while you are on vacation. There are two car rental packages for you to choose from. The fist package offers a $120 per day flat rate. The second package offers a $100 flat rate plus $0.55 per mile.

4x squared + 11x-20=0

The equation y=-0.065x2+6.875x+6200 models the amount y of sugar (in pounds per square foot) produced where x is the amount of fertilizer (in pounds per square foot) used.