If four ice creams cost $3.20, what would 8 ice cream cost?

$6.40

Step-by-step explanation:

3.20 x 2 = $6.40

The answer is $25.6 because, If you multiply $3.20 and 8 you will get this answer.

ok

step-by-step explanation:

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