Andy is collecting pocket change for a fundraiser. He begins with 102 coins in the cup, and their monetary value is $17.10. If he has a mix of dimes and quarters, how many of the coins are dimes

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

24

step-by-step explanation:

need more information

step-by-step explanation: