Mary applies a constant force

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap