Kindly answer the first question . LCM of 20,35 and 30

Mathematics

1 answer:

lukranit [14]2 years ago

3 0

Refer to the attachment for soultion!! :)

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Answer:

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Step-by-step explanation:

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You are presented with three urns. each urn has 10 marbles. in addition, each urn holds only black or red marbles. urn 1 has 3 r

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To calculate this probability we must take into account that there is the same probability that any of the 3 urns is chosen.
This probability is:
P (U1) = P (U2) = P (U3) = 1/3
Urn 1 contains 7 black and 3 red marbles
Urn 2 contains 2 black and 8 marbles network
Urn 3 contains 5 black marbles and 5 red marbles.

The probability of obtaining a black marble in Urn 1 is 7/10.
The probability of obtaining a black marble in Urn 2 is 2/10
The probability of obtaining a black marble in Urn 3 is 5/10.

Then we look for the probability of obtaining a black marble from urn 1 or a black marble from urn 2 or a black marble from urn 3. This is:
P (U1yB) + P (U2yB) + P (U3yB)
So:
(1/3) * (7/10) + (1/3) * (2/10) + (1/3) * (5/10) = 0,2333 + 0,0667 + 0,1667 = 0, 4667.
The probability that it is a black marble is 46.67%

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3 years ago

1) The Harrison family traveled 2112 mile in 4 days on their last vacation. The family traveled the same distance each day. How

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$\frac{2112}{4}\\528$

1. c

2. j

$\frac{30}{1\frac{1}{4}}\\\frac{30}{\frac{5}{4}}\frac{120}{5}\\24$

3. a

$0.03*36.8\\1.104$

4. g

$\frac{24\frac{1}{2}}{1\frac{3}{4}}\\\frac{\frac{49}{2}}{\frac{7}{4}}\\\frac{98}{7}\\14$

5. g

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3 years ago

Kindly answer the first question . LCM of 20,35 and 30​

Kindly answer the first question . LCM of 20,35 and 30