In which expression should the exponents be multiplied

A. 2^9 over 2^7

B. (6^10) ^-7

C. (1 over 2) ^3 (1 over 2) ^5

D. 5^2. 5^4

Maggie has a ribbon 27 feet long. what is the length of the ribbon in yards? equation : answer :

In the regular polygon below, the apothem measures 9 feet each side measures 13.1 feet. Calculate the area.

2 (y-3) : 2y-6 what is it

Donna had 5 tubes of glitter to use to decorate 3 posters. She used the same amount of glitter on each poster. how many tubes of glitter did donna use on each poster?

Write 4 as a product of primes

Vijay plans to reorganize the music on his MP3 player. After the changes he is planning, he will have 2 4/5 times as many hours of rock and hip-hop music on his MP3 player. a.

The ratio of french fries to packets of ketchup in Philip's bag is 7:1. What does this mean?

The population of a town is 20,000 and is decreasing at a rate of 5% per year. What is the population after 23 years?

Is 1/9 equal, less, or greater than 1/3?

A 12 ft ladder is leaning against a building. The ladder makes a 45 degree angle with the building how far up is the building does the ladder reach