David ran 3/4 of a mile every day for 7 days. How many miles did David run after seven days?

5.25 miles

Step-by-step explanation:

All you do is multiply 3/4 times 7 and it gives you the amount of miles that was ran in that week

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

i think it is 70

step-by-step explanation: