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Virty [35]
3 years ago
12

a rectangular deck has a area of 320 ft squared. the length of the desk is 4 feet longer than the width. find the dimensions of

the desk. Solve by completing the square.
Mathematics
1 answer:
Anon25 [30]3 years ago
3 0
Because l•w= area, area= 320, l=w+4
width • (width +4)= 320

Distribute the multiplication over addition and move all to the left side.
w^2 +4w-320=0
(w-16)•(w+20)=0 yet, The product of two things is 0 if one is 0 or both are 0 so
w-16=0 so w=16 and
w+20=0 so w= -20

Now the width or length could not be negative so we discard the solution w=-20.

Answer
width= 16 inches
length =16+4=20

Verify
w•l=320
16•20=320✔️





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Answer:

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Step-by-step explanation:

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Rectangle pairs are:

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Now, let's solve the question.

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Top rectangle:

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4 0
3 years ago
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Answer:

43 minutes

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How do I solve this?
Norma-Jean [14]

Answer:

Step-by-step explanation:

Base = 25 ft

height = 8 ft

Area of triangle = \frac{1}{2}*base * height\\\\

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7 0
3 years ago
Read 2 more answers
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