anonymous
  • anonymous
Probability again.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
amistre64
  • amistre64
the chances of getting a 9 results in rolling: 6,3 3,6 5,4 4,5 the first role is 4 out of 6 the second role is 4 out of 6 add them ? 8 out of 12? or 4 out of 12?
amistre64
  • amistre64
12 chances all together :) right?

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anonymous
  • anonymous
36 chances./results all together
amistre64
  • amistre64
i was getting there lol
amistre64
  • amistre64
and theres only 8 chances of them adding to 9
amistre64
  • amistre64
so 8 out of 36 = 8/36
anonymous
  • anonymous
6 chances? i thought
anonymous
  • anonymous
added to 9
amistre64
  • amistre64
out of the 36 ways to come out; there are only 4 ways that matter so 4 out of 36 seems more reasonable right?
amistre64
  • amistre64
6 and 3 3 and 6 5 and 4 4 and 5 4 ways to get a 9 out of 36 ways total
amistre64
  • amistre64
4/36 = 1/9
amistre64
  • amistre64
how many ways are divisible by 5 or 6 or both? 5 and 10 are divisible by 5 6 and 12 are divisible by 6
anonymous
  • anonymous
there are 13 ways i think
amistre64
  • amistre64
1. 2,3 2. 3,2 3. 5,1 4. 1,5 5. 4,2 6. 2,5 7. 3,3
amistre64
  • amistre64
7 out of 36 ways to get the answer for B 7/36
amistre64
  • amistre64
when you roll a dice twice; you only get the options 1 thru 6 as a face value; the lowest sum is 2 and the highest is 12 gotta keep them between 2 and 12 right?
anonymous
  • anonymous
yes
amistre64
  • amistre64
so 36 total chances; 6*6 = 36 ways the only combos available for a 9 are to roll: 6,3 3,6 5,4 4,5 that is only 4 ways out of 36 to get a sum of 9 right?
anonymous
  • anonymous
yes
amistre64
  • amistre64
so P(A) = 4/36 = 1/9
anonymous
  • anonymous
Thank you So much.
amistre64
  • amistre64
P(B) asks for a sum that is divisible by 5 or 6 those values are 5,10 and 6 and 12 right?
anonymous
  • anonymous
yes
amistre64
  • amistre64
10= 6,4 4,6 5,5 5= 4,1 1,4 2,3 3,2 6= 5,1 1,5 4,2 2,4 3,3 12= 6,6
amistre64
  • amistre64
13 out of 36 to get P(B)
anonymous
  • anonymous
YOU SAID 7/36!!
amistre64
  • amistre64
i was wrong lol

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