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Ronch [10]
3 years ago
11

What is 54 rounded to the nearest 10

Mathematics
2 answers:
Aneli [31]3 years ago
7 0
<em>54 ROUNDED to the nearest ten is 50. This is because </em><em>4 is less than five. 

Lets say the question was "round 55 to the nearest ten, the answer would be 60."

So, the answer to your question is 50.
</em>
dsp733 years ago
6 0


54 rounded to the nearest 10 would be 50 because 54 is closer to 50 than 60.

So, the answer is 50.

Hope it helps

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Write the expression 12 x 4^2 in words
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3 years ago
Two poles are connected by a wire that is also connected to the ground. The first pole is 18 ft tall and the second pole is 24 f
9966 [12]

Answer:

  72 feet from the shorter pole

Step-by-step explanation:

The anchor point that minimizes the total wire length is one that divides the distance between the poles in the same proportion as the pole heights. That is, the two created triangles will be similar.

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so the anchor distance from the shorter pole as a fraction of the total distance between poles will be the same:

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The wire should be anchored 72 feet from the 18 ft pole.

_____

<em>Comment on the problem</em>

This is equivalent to asking, "where do I place a mirror on the ground so I can see the top of the other pole by looking in the mirror from the top of one pole?" Such a question is answered by reflecting one pole across the plane of the ground and drawing a straight line from its image location to the top of the other pole. Where the line intersects the plane of the ground is where the mirror (or anchor point) should be placed. The "similar triangle" description above is essentially the same approach.

__

Alternatively, you can write an equation for the length (L) of the wire as a function of the location of the anchor point:

  L = √(18²+x²) + √(24² +(168-x)²)

and then differentiate with respect to x and find the value that makes the derivative zero. That seems much more complicated and error-prone, but it gives the same answer.

7 0
3 years ago
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