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2 years ago

If john ran 5 kilometer marathon ,how long was that in meters

2 answers:

5 0

<span>5000 meters. The prefix kilo- denotes multiplication of 1000. Using this knowledge, a kilometer can be translated to 1000 meters. The units also each have a shorthanded symbol, kilometer is km and meter is m. 1 km = 1000m Using this, we can rewrite this equation to fit our problem 5 km = ?m Substitute in meters for kilometers. 5 (1000m) = 5000m Giving us the correct answer of 5000 meters.</span>

Dominik [7]2 years ago

4 0

The answer would be 5000 meters.

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Answer:

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Step-by-step explanation:

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We know that after dilation the corresponding sides of image and preimage are in the same proportion.

The image of AD is A'D'.

From the figure it is noticed that the A(-1,2), D(-1,-1), A'(-3,6) and D'(-3,-3).

Distance formula is

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$AD=\sqrt{(-1+1)^2+(-1-2)^2}=\sqrt{9}=3$

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Scale factor is constant which represents the relation between image and preimage.

$k=\frac{A'D'}{AD}$

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Therefore the scale factor is 3.

If k>0 it means enlargement and if k<0 it means reduction. Therefore third option is correct.

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