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s344n2d4d5 [400]
3 years ago
5

Two balls are drawn in succession out of a box containing 5 red and 5 white balls. Find the probability that at least 1 ball was

​ red, given that the first ball was

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
4 0
Check the tree diagram of the problem:

The first ball can be either Red or Blue, the second ball can either be Red or Blue.

The branches represent all possible scenarios. 

For example, consider the upper branch, the case when both balls are blue:

The first ball is Blue, probability 5/10, the second ball is Blue, probability 4/9 because now there are 4 left blue balls, and 9 balls in total, after we picked the first blue.

The other branches have the same logic.

The question is not completed so we have 2 cases:

"Find the probability that at least 1 ball was​ red, given that the first ball was red"

here we add the separate probabilities of (R, R) and (R, B)

P(R,R)+P(R,B)=2/9 + 5/18 =  4/18  +5/18= 9/18=0.5

 
"Find the probability that at least 1 ball was​ red, given that the first ball was blue"

probability is P(B, R)=5/18=0.28

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Answer:

14 * 8 = money given out

Step-by-step explanation:

#of people given money * (times) amount per person.

6 0
3 years ago
the pressure exerted on the floor by the heel of someone's shoe is inversely proportional to the square of the width of the heel
Katen [24]
P = k/w^2 

<span>first of all you need to find k </span>
<span>But I kind of don't like the units of each value so let say </span>
<span>400KPa = 4 * 10^5 Pa = 4 * 10^5 N/m^2 </span>
<span>2 cm = 2 * 10^-2 m </span>

<span>input values in the equation </span>

<span>4*10^5 = k/(4*10^-4) >>> k = 160 N </span>

<span>P = 160/w^2 </span>
<span>it said if she wears a heel with a width of .5 cm </span>

<span>P = 160(0.5 * 10^-2)^2 >>> P = 6400 KPa</span>
4 0
3 years ago
Find the solution set of this inequality |11x - 22| &gt; 22<br><br> Need help ASAP!!
MissTica

Your answer should be x < 0 or x > 4.

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7 0
3 years ago
1. General admission to the Fair is $10.00. Each ride costs $4.75. If Lisa has $75.00 to spend att Fair , what method cal be use
77julia77 [94]

Answer:D

Step-by-step explanation:mark me brainliest

6 0
3 years ago
Read 2 more answers
WIL GIVE BRAINLIEST!
Grace [21]

Answer:  4x - 13

<h2>Step-by-step explanation: </h2>

<em>First, we need to get triple of x:</em>

Triple of x is: 3x

<em>Next is to get the difference between 3x and 13:</em>

x + 3x -13

4x - 13

Hence, the variable expression is 4x - 13

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3 years ago
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