Claire has quarters and nickels in her purse. the total value of the coins is $2.65. which equation can be used to find x, the number of quarters in claire’s purse? coins in claire's purse coin - number of coins nickels - 2x +4 quarters - x a 5 (2x+4 )+ 25x = 2.65 b 0.05 (2x+4) +0.25x = 2.65 c 0.5 (2x+4) + 0.25x = 2.65 d (2x+4) + x = 2.65

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: 2530

hope this