The longest runway at an airport has the shape of a rectangle and an area of 1,934,400 square feet. This runway is 160 feet wide. How long is the runway?

The length of the runway =  12090 feet

Step-by-step explanation:

The formula involving the area of a rectangle is

here

Given

Area A = 1,934,400 square feet

Width w = 160 w

Length l = ?

Using the formula

substituting the values

1,934,400 = 160 × l

l = 1,934,400 / 160

l = 12090 feet

Therefore, the length of the runway =  12090 feet

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