Which algebraic expression represents "the sum of a number and 9"?

n minus 9

n + 9

9 n

StartFraction n Over 9 EndFraction

Who wrote down the equation for the law of gravitation?

79percent as a fraction n its simplest form

sand is falling at the rate 27 cubic feet per minute onto a conical pile whose radius is always equal to its height. how fast is the height of the pile growing when the height is exactly (a) 3 feet (b) 6 feet (c) 9 feet.

A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a green marble, replacing it, and then picking a yellow marble?

Three differnt way to wright 3,705.692

what is the correct upper and lower control limits for 8.42 pounds and the accectable range for plus or minus. 65 pounds

Argyle can read 7 pages of his book in 5 minutes. At that rate, how many pages can he read in two hours?

Country Population (1997 estimate) Area (square km) U. S. 272,648,000 9,364,520 Romania 22,609,000 237,391 Ghana 18,339,000 237,533 Which of these countries has the greatest population density? Which has the least?

Whats the square root of 2562634

Difference between 136 and - 50