6th grade math homework?

Question

It's really hard..

Soo, I was wondering if you guys could help me?

For example what I need is:

"Let N = # Apples

2n + 14 oranges

2n + 14 = 40

2n + 14 - 14 = 40

2n = 26

2n divided by 2 = n / 26 divided by 2 = 13

27 ORANGES"

Like that ^. lol

The perimeter of a rectangular lawn is 32 yd. If the length is 3 times the width, what are the length and the width of the lawn?

Answer 1

l+w=32

3l=w

24+8=32

length=24

width=8

Answer 2

Write what you know:

Variables:

L = length

W = width

Perimeter formula: 2L + 2W  = P

Given: The perimeter of a rectangular lawn is 32 yd.

Means: 2L + 2W = 32

Given: If the length is 3 times the width

Means: L = 3W

You have two equations.

2L + 2W = 32

L = 3W

Replace L with 3W in the first equation.

2L + 2W = 32

2(3W) + 2W = 32

6W + 2W = 32

8W = 32

W = 32/8 = 4

Plug this into the second equation to solve for W.

L = 3W

L = 3(4) = 12

ANSWER: The length is 12 yards; the width is 4 yards.