To estimate how many miles you are from a thunderstorm, count the seconds between when you see lightening and when you hear thunder. then divide by 5. write and solve an equation ti determine how many seconds you would count for a thunderstorm that is 2 miles away

10

Step-by-step explanation:

If you count ten seconds before the next thunder/lightning, then divide by 5, you'll get 2.

2=2 miles

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