The expression 2(1 + w) is used to calculate the perimeter of a rectangle, where I is length and w is width. If the length is 2 over 7 and the width is 3 over 7 what is the perimeter of the rectangle in units?
5/7
1 unit

1 3/7

2 5/7

So basically, since the formula is 2(l × w), we will do:

(Length) 2/5 + 2/5 (the same thing as multiplying it by two) which equals 4/5.

Then we do the same for the width:

(Width) 1/5 + 1/5 (also the same thing as multiplying by two) to get 2/5.

Now we just add both fractions: 4/5 + 2/5 = 1 1/5

So the answer is C.

Step-by-step explanation:

7.3

step-by-step explanation:

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