mssdbenton
Answered

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Sagot :

jcherry99

Answer:

0.722

Step-by-step explanation:

First of all add up the sections 1 to 8 to make sure they add to 360

They do actually.

  • 1     10
  • 2    20
  • 3    30
  • 4    40
  • 5    50
  • 6    60
  • 7    70
  • 8    80

Total    360

This is an area question. Every time you spin the spinner, it must come to an area labeled 1 to 8.

You could do this by setting up a ratio of each section and subtract the section for 3 and 7.  That's the long way.

The shorter way is to add up the degrees for 3 and 7 and subtract them from the total (360)

Area 3 + area 7 = 30o + 70o = 100 degrees.

So the probability of landing in 3 or 7 is 100 / 360 = 0.278 (rounded)

The probability of Not landing on 3 or 7 is 1 - 0.278 = 0.722

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