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timofeeve [1]
1 year ago
9

1. Do you the following side lengths form a right triangle?2. Which measurement is closest to the value of X in centimeters?

Mathematics
1 answer:
koban [17]1 year ago
6 0

Answer:

Part 1:

Yes, the side lengths form a right triangle.

Part 2:

Option d 37.1 cm

Explanation:

We need to use the pythagorean theorem.

In part 1, if the 3 side lengths are a right triangle, then, they must verify:

7.5^2=4.5^2+6^2

By the theorem. Then:

\begin{gathered} 7.5^2=56.25 \\ 4.5^2+6^2=20.25+36=56.25 \end{gathered}

They're equal, then the lengths correspond to a right triangle.

For part 2, we need to use again the theorem. In this case:

\begin{gathered} 12^2+x^2=39^2 \\ x=\sqrt{1521-144} \\ x=\sqrt{1377} \\ x\approx37.1cm \end{gathered}

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Just need some help with the second answer thanks :)
vazorg [7]

Answer:

4,151,347,200

Step-by-step explanation:

To find how many ways the train can be made up we use the permutation formula and the values given.

n = 16

k = 9

_{n}P_{k}=\dfrac{n!}{(n-k)!}

_{16}P_{9}=\dfrac{16!}{(16-9)!}

_{16}P_{9}=\dfrac{16!}{7!}

_{16}P_{9}=4,151,347,200

So there will be 4,151,347,200 different ways that the train can be made.

5 0
3 years ago
What is 4/5 11/25 4/50 as a percent?
svp [43]
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3 years ago
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gavmur [86]

Answer:

<em>Given </em><em>point </em><em>is </em><em>K </em><em>(</em><em> </em><em>3</em><em>,</em><em> </em><em>-</em><em>7</em><em> </em><em>)</em>

Step-by-step explanation:

Rotation through 270

K ( 3, -7) K'( -7 , -3 )

Hope it was helpful

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