You split $2200 between two savings accounts. account a pays an annual interest rate of 5% and account b pays an annual interest rate of 3%. after one year, you have earned a total of $78.50 in interest. how much money did you invest in each account?

Step-by-step explanation:

Let x be the amount at 5%

Then 2200 - x is the amount at 3%

The total interest is:

Find the amount at 3%:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

7.3

step-by-step explanation: