The ski club is planning a trip for winter break. they write the equation c=200+10n to estimate the cost in dollars, c of the trip for n students.
duncan and corey both use the equation to estimate the cost for 50 students. duncan says the cost is $10,500 , and corey says it's $700.
a) whose estimate is correct?
b) how do you think duncan and corey found such different estimates if they used the same equation?

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:

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