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serious [3.7K]
3 years ago
11

Of is directly proportional toy and x = 45 when

Mathematics
1 answer:
kompoz [17]3 years ago
4 0

Answer:

if x=ky, where k is constant.

value of x

45/3=k3/3

15=k, constant is 15

value of x when y =6

x=ky

x=15(6)

x=80

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4 years ago
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Answer:

1.\boxed{\text{400 ft}^{2}}; 2. \boxed{\frac{1}{3716}}

Step-by-step explanation:

Step 1. Calculate the area of the floor

If the area A₁ of a square floor on the scale drawing is 100 cm², the length of a side is 10 cm.

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The area A₂ of the floor is  

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We must express both areas in the same units.  

Let's express the area of the room in square centimetres.

l = 20 ft ×  (12 in/1 ft) = 240 in

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A₂ = l² = (609.6 cm)² = 371 612 cm²

The area A₁ on the scale drawing is 100 cm².

The ratio of the areas is

\frac{A_{1}}{ A_{2}} = \frac{100}{371612} = \frac{1 }{3716}\\

The ratio of the area in the drawing to the actual area is \boxed{\frac{1}{3716}}

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3 years ago
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Answer:

x = 1/7

Step-by-step explanation:

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3 years ago
What is the area of the polygon in square units?<br> Correct answer gets brainliest
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Answer:

72

Step-by-step explanation:

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