**Answer:**

length= 35 feet and width= 10 feet

**Step-by-step explanation:**

You are given the perimeter of the rectangular deck is

90 feet.

2 x length + 2 x width = 90 You are also given that the deck's length is 5 feet less than 4 times it's width. That is length = 4 x width - 5

Those two equations are your system of linear equations. The second equation can be plugged into the first equation. This gives us an equation entirely in terms of width.

2x (4 x width - 5) + 2 x width =90

Distribute the 2 though

8 x width - 10 + 2 x width = 90

Combine like terms with width.

10 x width - 10 = 90

Add 10 to both sides.

10 x width = 100

Divide both sides by 10 width = 100

Now you can plug width into your original equation for length above. Recall: length = 4 x width - 5

Length = 4 x 10 - 5

Length = 40 - 5

Length = 35

**Answer:**

Just fail it.

**Step-by-step explanation:**

Sleep in class

Talk to friends

Get put into e2020 and get ALL the answers off of here.

**Answer:**

4a. 15 wear braces

b. 20%

5a. 140 children - 400 - 120 = 280 ... 280/2=140

b. 35%

6a. Bob got $22.50. $45 / 2 = $22.50

b. $45 - $90 / 2 = $45

**Step-by-step explanation:**

pls mark brainliest! <3

Why trees are helpful........................................

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Very easy just state facts about trees in a format like this. Google why trees are helpful and some facts should pop up. A good paragraph should have at least five (5) good strong sentences.