What is 221,000,000,000,000,000,000 expressed in scientific notation? a. 2.21 * 1021 b. 2.21E20 c. 2.21E21 d. 2.21E-20 e. 2.21 * 10-21 f. 2.21 * 10-20 g. 2.21 * 1020 h. 2.21E-21

What is the approximate volume of a right cone with a diameter of 10 meters and a height of 5 meters? Use 3.14 for π. A. 130.8 m3 B. 314 m3 C. 392.5 m3 D. 1570 m3

Which figures have only one pair of parallel lines

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a red marble and then a green marble assuming you replace the first marb

How do I solve (6/5) to the - 2nd power

A trinomial is also a polynomial A. True . False

What is the mean of 104,20,8,104

Pamela bought an electric drill at 80% of the regular price. She paid $32 for the drill. What was the regular price?

Estimate a 10% tip on a bill of $143.17 by first rounding the bill amount to the nearest ten dollars. Estimated tip: $il x 6 ?

What is 63 7/8-55 34

What is the area of a sector with a central angle of 210 degrees and a diameter of 4.6 m? Round the answer to the nearest tenth.