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Aliun [14]
2 years ago
15

Ratio and proportion question​

Mathematics
1 answer:
rosijanka [135]2 years ago
6 0

Answer:

<em>Hi there mate, sorry but we can't see the question.... Please try to resend...</em>

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The perimeter of a rectangular field is 60 meters. Its area is 200 square meters. Find its dimensions.
Vanyuwa [196]

Answer:

20 m by 10 m

Step-by-step explanation:

let w be width and l be length , then

2(l + w) = 60 ( divide both sides by 2 )

l + w = 30 ( subtract w from both sides )

l = 30 - w → (1)

lw = 200 → (2)

Substitute l = 30 - w into (2)

w(30 - w) = 200 ← distribute parenthesis on left side

30w - w² = 200 ( subtract 200 from both sides )

30w - w² - 200 = 0 ( multiply through by - 1 )

w² - 30w + 200 = 0 ← in standard form

(w - 10)(w - 20) = 0 ← in factored form

Equate each factor to zero and solve for w

w - 10 = 0 ⇒ w = 10

w - 20 = 0 ⇒ w = 20

Substitute these values into (1)

l = 30 - 10 = 20

l = 30 - 20 = 10

dimensions of field is 20 m by 10 m

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When you have the same denominator. Other than that have different denominators will not be possible.
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I need help please and thank you
myrzilka [38]

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3

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A student conducts several random surveys to find out the most preferred lunch option. Each survey was of 60 students. No studen
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You are saving money to buy a pair of pants that costs $53. You have saved $32. How much more money do you need to save?
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