The weight of water is 62 1/2 lb per cubic foot. what is the weight of 20 1/2 cubic feet of water? how much does 20 1/2 cubic feet of water weight?

i got 41/2 can someone check if im correct dont really know how to do this

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)