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IgorLugansk [536]
4 years ago
9

there are 1,320 ways for three students to win first, second, and third place during a debate match. how many students are there

on the debate team? explain your reasoning

Mathematics
1 answer:
mariarad [96]4 years ago
5 0
I would say they are <span>44O </span>students on the debate team .   whyy ?  because you divide the  total of ways which is   ( 132O ) and the total of places you could win which is <span>( 3 ) </span>. 
<span>132O / 3 = 44O

welcome m8 </span>
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If she ate half of it, you divide by 2.

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You have two biased coins. Coin A comes up heads with probability 1/4. Coin B comes up heads with probability 3/4. However, you
slega [8]

Answer:

3/4

Step-by-step explanation:

Probability is the likelihood of an event.

No.of favourable outcomes/ Total no. of outcomes

Probability of coin selection : [Both coins have equal likelihood of being chosen]

  • Prob( Coin A Selection) = 1/2
  • Prob (Coin B selection) = 1/2

Probability of head & tail by both coins :

  • Prob (Head / Coin A) = 1/4
  • Prob (Tail / Coin A) = 1 - [ P (Head/Coin A) ] = 1 - 1/4 = 3/4
  • Prob (Head / Coin B) = 3/4
  • Prob (Tail / Coin B) = 1 - [ P (Head/Coin B) ] = 1 - 3/4 = 1/4

Probability of getting head by Coin A : Prob (Coin A) & Prob (Head/CoinA)  = 1/2 x 1/4   = 1/8

Probability of getting tail by Coin A : Prob (Coin A) & Prob (Tail/CoinA) = 1/2 x 3/4 = 3/8

Probability of getting head by Coin B : Prob (Coin B) & Prob (Head/CoinB)  = 1/2 x 3/4   = 3/8

Probability of getting tail by Coin B : Prob (Coin B) & Prob (Head/CoinB)  = 1/2 x 1/4   = 1/8

Probability 'The guess [head from coin B, tail from coin A] :

Prob (Coin A) & Prob (Tail/CoinA) or Prob (Coin B) & Prob (Head/CoinB)  

= 3/8 + 3/8 = 3/4

3 0
3 years ago
A bag contains 3 red marbles, 5 blue marbles and 6 green marbles. If three marbles are drawn out of the bag, what is the probabi
Romashka [77]

Answer:

0.027 to the nearest thousandth.

Step-by-step explanation:

There are 14 marbles in the bag, so:

Prob( a blue on the first draw) = 5/14.

Prob( a blue on the 2nd draw) = 4/13.

Prob( a blue on the 3rd draw) = 3/12 = 1/4.

So the required probability is 5/14 * 4/13 * 1/4

= 20/ 728

= 0.02747.

6 0
3 years ago
Ill give brainliest pls help
Lerok [7]

Answer:

1

Step-by-step explanation:

1-2x ≥0

1≥ 2x

x≤1/2

only 1 i.e.,E is not included.

6 0
3 years ago
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