Which expression can be simplified as 1/n^18

A. (n^2) ^9

B. (n^-9) ^-2

C. (n^-6) ^-3

D. (n^-3) ^6

Mr. Design is covering rectangular pieces of plywood with fabric to create a wall hanging. Each piece has an area if 12 3/4 square inches. One of the rectangles is 2 1/8 inches wide and area second rectangle is 2 1/10 inches wide.

The distance from the earth to the moon is about 2.4 * 105 miles. the planet earth is about 2.5 * 104 miles around at the equator.

Mai has a bookcase with 6 shelves. There are c books on each shelf. Using c, write an expression for the total number of books.

0 = (x+3) (x-2) ?

I race lasted 2.07 hours. How many seconds did the race last A. 2980.8 seconds B. 7452 seconds C. 5500 seconds D. 124.2 seconds

How do you reduce 12/30 by 1/2

Maria's age of 17 years less than Orlando's age. The sum of their ages is 33 find their ages.

John had $21 to spend on 2 notebooks. After buying them he had $13. How much did each notebook cost?

A right triangle has an angle that measures 34 and the adjacent side measures 17. What is the length of the hypotenuse to the nearest tenth? F. 20.5 G. 25.2 H. 30.4 J. 34

A spinner is divided into 5 equal sections labeled A B C D E. You spin the spinner twice. What is the probability you land on a vowel both times?