Matias stepmom used 30% off coupon to buy the ingredients for the huevos ranchero she spend 28$ what is the regular price r of the ingredients before the discount enter the amount

hi, i am not sure about this one but i think its d,

hope this !

yes yes yes yes yes yes yes yes yes

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