Find the interest due on $1,400 at 9% for 270 days. (remember that for bank interest purposes, a year is considered to have 360 days.) a) 93.89 b) 93.22 c) 94.50

since for the bank purposes, there are 360 days in a year, then 270 days is 270/360 years, or namely 3/4 years.

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

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23