Classify each system of equations as having a single solution, no solution, or infinite solutions. y = 5 − 2x 4x + 2y = 10 x = 26 − 3y 2x + 6y = 22 5x + 4y = 6 10x − 2y = 7 x + 2y = 3 4x + 8y = 15 3x + 4y = 17 -6x = 10y − 39 x + 5y = 24 5x = 12 − y

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

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42