A21000 gallon pool has 9000 gallons of water when a hose is placed in pool and add water at a rate of 1500 gallons per hour. how long does it take to fill

Answer

8 hours

Explanation

The amount of water the gallon pool need to fill is;

21,000 - 9000 = 12,000 gallons

To get the number of hours needed to fill the gallon pool

12,000/1,500  = 8 hours

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol