On a farm, 1/7 of the sheep are gray, 2/7 of the sheep are black, and the rest of the sheep are white. There are 36 white sheep. How many sheep in all are on the farm?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

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