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GarryVolchara [31]
3 years ago
7

Three urns of the same appearance are given as follows: Urn A contains 5 red and 7 white balls. Urn B contains 4 red and 3 white

balls. Urn C contains 3 red and 4 white balls. An urn is selected at random and ball is drawn from the urn. (1) What is the probability that the ball drawn is red. (2) If the ball drawn is red, what is the probability that it came from urn A.​
Mathematics
1 answer:
shutvik [7]3 years ago
7 0

Answer:

1. 12/26, or simplified as 6/13, or about 46%.

2. 5/26, or about 19%.

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Flauer [41]

Answer:

Step-by-step explanation: 1/9X ⅝ + (½)³ = 0.19

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How do ypu slove dis? <br>y^2(q-4) - c(q - 4)
Annette [7]
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Step by step solution :<span>Step  1  :</span><span>Equation at the end of step  1  :</span><span><span> ((y2) • (q - 4)) - c • (q - 4) </span><span> Step  2  :</span></span><span>Equation at the end of step  2  :</span><span> y2 • (q - 4) - c • (q - 4) </span><span>Step  3  :</span>Pulling out like terms :

<span> 3.1 </span>     Pull out     q-4 

After pulling out, we are left with : 
      (q-4) • (<span> y2</span>  *  1 +( c  *  (-1) ))

Trying to factor as a Difference of Squares :

<span> 3.2 </span>     Factoring: <span> y2-c</span> 

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</span>Proof :<span>  (A+B) • (A-B) =
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</span>Note : <span> <span>AB = BA </span></span>is the commutative property of multiplication. 

Note : <span> <span>- AB + AB </span></span>equals zero and is therefore eliminated from the expression.

Check : <span> y2  </span>is the square of <span> y1 </span>

Check :<span> <span> c1  </span> is not a square !! 
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Final result :<span> (q - 4) • (y2 - c) </span><span>
</span>
4 0
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