Mr. Carr paid $64 interest for a two-year loan at 8% simple interest
How much money did he borrow?

$400

Step-by-step explanation:

The formula for simple interest is i = p * r * t, where r is the annual interest rate as a decimal fraction, p is the principal and t is the time in years.

Here we want to determine what the principal was.  Solving the above equation for p, we get:

           i            $64

p = = = $400

        r * t       (0.08)(2)

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3