The jar contains 3+7+5=15 marbles in total.
We have to find the probability of the following events:
1. We choose a red marble from the jar that contains 15 marbles in total, 3 of them are red
2. We choose a blue marble from the jar that contains 15 marbles in total, 5 of them are blue
3. We choose a white marble from the jar that contains 15 marbles in total, 7 of them are white
The probability of the first event to happen is:
The probability of the second event to happen is:
The probability of the third event to happen is:
The probability of all three events to happen is:
The simplified form of the expression is 3b+2a/(ab)²
<h3>Sum of fractions</h3>
Fractions are written as a ratio of two integers. Given the expression below;
3/a^2b + 2/ab^2
Find the LCM
3/a^2b + 2/ab^2 = 3b+2a/a²b²
3/a^2b + 2/ab^2 = 3b+2a/(ab)²
Hence the simplified form of the expression is 3b+2a/(ab)²
Learn more on sum of fraction here: brainly.com/question/11562149
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Step-by-step explanation:
<u>Break down the word expression:</u>
The sum of 5 and b divided by two
the sum (+) of 5 and b (5 + b) divided by 2.
<u>Expression:</u>
Parentheses represent that we need to add first, in order to divide the sum by 2.
You have to make the mixed number into a fraction in order to divide