Robyn makes and sells homemade bracelets she made $87.25 last week this week she donated some bracelets to charity so her profit at the end of this week can be represented by -$12.50 part a write a subtraction and addition expression to represent robyns total profit for the two weeks combined part b write an expression for the difference between last week profit and this weeks profit. What is the difference in dollars between last weeks profit and this weeks profit

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

overpriced

step-by-step explanation:

add 8+12 to get a simplified answer of 12r-20