What are the angles of rotation for a 20-gon?

Which of the fractions is equivalent to4/5

54 is what percent of 151? (with steps)

The number of blue chips is 3 more than twice the number of red chips

6,484 : 24 what is the quotient?

What patterns do you notice in the number of zeros of the product when you multiply a whole number by powers of 10? Explain why this works.

How many triangles and how many rectangles form a rectangular pyramid?

Mrs. Peters' classroom is 14 feet by 18 feet. She wants to put a border around all the walls of her classroom just below the ceiling. How many feet of border does she need to buy?

A city is growing at the rate of 0.3% annually. If there were 3,278,000 residents in the city in 1992, find how many (to the nearest ten-thousand) are living in that city in 2000. Use y=3,278,000/left (2.7/right) ^{.003t}

Jose pack54 CDs into smallboxes. Each box holdsome 9 CDS. how many boxes does jose pack to hold all 54 CDs

A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 4 hours, while the outlet pipe can empty it in 10 hours. How long will it take to fill the vat if both pipes are left open?