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jok3333 [9.3K]
3 years ago
11

Planes X and Y and points J, K, L, M, and N are shown. Exactly how many planes contain points J, K, and N? 0 1 2 3

Mathematics
2 answers:
defon3 years ago
7 0
0, because 3 points make a line.
julsineya [31]3 years ago
7 0
It was 0 because three points make a line :P
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What is the length of AC?<br><br> 3 ft<br> 4 ft<br> 9 ft<br> 18 ft
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There are 100 people in a sport centre.
Arlecino [84]

We need to determinate who doesn't use anything, so first we must know the real number of who are practising: a person can do more things.

For doing this, is better use a three-circles graphic, but we try to do without it.

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  • 38 gym + pool, but this number includes the people of 1st point. We must know who do only gym + pool: 38 - 16 = 22
  • 31 pool + track, this number also includes people of 1st point, so: only pool + track 31 - 16 = 15
  • 33 gym + track, this number also includes people of 1st point, so: only gym + track 33 - 16 = 17

now:

  • 67 gym, we must know who use only gym: 67 - 16 (gym + pool + track) - 22 (gym + pool) - 17 (gym + track) = 12
  • 62 pool, we must know who use only pool: 62 - 16 (gym + pool + track) - 22 (gym + pool) - 15 (pool + track) = 9
  • 56 track, we must know who use only track: 56 - 16 (gym + pool + track) - 15 (pool + track) - 17 (gym + track) = 8

now we must now who do some facility: let's sum all

16 + 22 + 15 + 17 + 12 + 9 + 8 = 99

99/100 practise something

So only 1/100 doesn't use nothing

The probability is 1%

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Can someone help me with this question.
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Doce metros de cuerda

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