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

Which explanation correctly solves this problem? Chris was putting a railing on his deck. At the end of the day, he had 11.5 feet of railing left over. During the day, he had used two 1.5-foot-long piece of railing, one 3.

A group of friends are going to see the newest action movie. The price of a ticket is $6.25. As a group, they spent $12 on refreshments. If they spent a total of $30.

The lengths of the legs of a right triangle are 8 inches and 9 inches. what is the lengths of the hypotenuse? round to the nearest Ich.

Solve each proportion 4/x+2=16/9

Jim and Cindy, working together, can clean the house in 6 hours. Working alone, Cindy takes three times as long as Jim. How long does it take Jim to clean the house alone?

How much force is needed to accelerate a 2,500 kg car at a rate of 4 m/s

20:2 (5+5) = what is the answer and breakdown?

The graph below shows interest charges accrued on 4 different credit cards. Based on the graph, which credit card appears to have an introductory apr? A. Card 2 B. Card 1 C. Card 3 D. Card 4

Which term describes the set of all possible output values for a function? a. output b. input c. range d. domain

3^2 + (6 • 4^2) 10 - 22