75c - 300 = 25c + 200

c = 10

Step-by-step explanation:

You need to get c byitself on one side. To do that without worrying about negative numbers you will subtract 25c from each side which will leav you with ...

50c -300 = 200

Then you add 300 on both sides to get c alone

50c = 500

Then divide both sides by 50 to get c alone

c= 500/50 = 10

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

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