A store prices electronics and accessories at a 45% markup rate. If the store purchases headphones for $15, find the retail (selling) price of the headphones.
$21.75
$6.75
$15.45
$16.45

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

can you make your screen more see able?

then i might be able to .

7

step-by-step explanation:

step-by-step explanation: hi!