Some money was invested at 12% interested for 2 years. If the interest was $21, how much was invested?

$87.5 was invested

Step-by-step explanation:

10.5 is 12% of 87.5, so if the money was in the bank for 2 years, we would have to do 10.5*2 which is 21, and that's how much money was gained from the investment.

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w