Diana brought 8 3/5 yards of blue velvet material for a dress and coat. she used 3 4/5 yards on the coat. how much is left for the dress?

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

If np3 /nc2 = 6, find the value of n