Of the methods for solving systems of equations, which is best used when one equation is solved for either x or y, or can easily be solved for x or y? Elimination
Substitution
None of the methods are appropriate for this situation.
Graphing

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

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

the second option

step-by-step explanation: