For the last 4.5 hours, the temperature has decreased at a rate of 2.8 °F per hour. Which best represents the overall change in temperature over this time period? A -12.6 °F B -1.6 °F C 1.6 °F S 12.6 °F

55/i dont know i do it for the points

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

if you would like with a question it is easy to get an answer by including some or multi choice options

step-by-step explanation:

answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06