Joe was walking to a grocery store at a speed of 50 feet in 9 seconds. at what speed was he walking in miles per hour
(1 mile = 5280 feet)

3.79 miles per hour to the nearest hundredth.

Step-by-step explanation:

There are 3600 seconds in 1 hour.

50  feet in 9 seconds = 50/9 feet per second.

= (50/9) * 3600  feet  per hour

= (50/9) * 3600 / 5280 miles per hour.

= 50 * 400 / 5280

= 3.79 miles / hour.

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