A plane flew 720 miles in 6 hours. How many miles did the plane fly in 4 hours?

Step-by-step explanation:

We can create a ratio here to find the constant of proportionality and use that to find how many miles the plane flew in 4 hours.

We know the plane flew 720 miles in 6 hours. We can create a ratio, represented as a fraction, in the form   .

We can now make another ratio where we use a variable for the miles flown in 4 hours.

Since the ratios are equal, we can create an equation.

To find the value of x, let's cross multiply.

So the plane flew 480 miles in 4 hours.

Hope this helped!

answer for #1 is c

answer for #2 is d

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14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3