Ava starting playing video games as soon as she got home from school. She played video games for 30 minutes. Then Ava helped clean the kitchen for 45 minutes. After the kitchen was clean, it took Ava 1 hour and 45 minutes to finish her homework. When Ava finished her homework, it was 5:15 P. M. What time did Ava get home from school? Include PM or AM in the answer.

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

5

step-by-step explanation: