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Lyrx [107]
3 years ago
12

10

Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer:

2(11 + 6x)

Step-by-step explanation:

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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.

So

  • 16 pool + gym + track, and this number is sure
  • 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%

7 0
3 years ago
Jennifer is 75% free-throw shooter. if she shot 44 free-throws this year, how many did she miss?
Svet_ta [14]
44 X 0.75 = 33
44 - 33 = 11
She missed 11 shots 
8 0
3 years ago
Read 2 more answers
X+3=2X+6(x+4)<br> Please Answer!
nataly862011 [7]
X=10
-3 on both sides
Then -6(x+4)+3 to the other side
4 0
2 years ago
Eight less than twice a number is equal to 16
Kamila [148]

Answer: The number is 12

Step-by-step explanation:

n=number

2n-8=16

2n=24

n=12

6 0
2 years ago
Multiplying Polynomials Investigation:Arnold has a 6ftx6ft piece of cardboard to make a open box by cutting equal size squares f
borishaifa [10]

i don't think so.....

sorry

7 0
3 years ago
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