The length of jimmy's math book is 7 cm cubes his reading book is 12 cm cubes longer what is the length of his reading book

Math book = 7cm cubes

Reading book = 12 + 7

12 + 7 = 19

His reading book is 19 cm cubes.

Step-by-step explanation:

To solve this, we need to use addition, since his reading book is 12 cm longer than his math book.

7 + 12 = 19

I'm always happy to help :)

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

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step-by-step explanation: