two siblings are 55 years old combined the youngest sibling is 9 years younger than the oldest sibling how old is the youngest s
1 answer:
<h2>Systems of Equations Word Problems</h2>
To solve systems of equations word problems, we can delegate certain variables to subjects mentioned in the word problem. From there, we can form equations based on the given values.
<h2>Solving the Question</h2>Let <em>a</em> be the older sibling's age and <em>b</em> be the younger sibling's age.
We're given:
- <em>a</em> + <em>b</em> = 55 years old
- <em>b</em> + 9 years = <em>a</em>
<em />
All we've done so far is translate the given sentences into equations. Now, we have to solve for <em>b</em>, which is the age of the youngest sibling. Solve using substitution:
Therefore, the younger sibling is 23 years old.
<h2>Answer</h2>23 years old.
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Answer:
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a)0.2240
b)0.5768
Step-by-step explanation:
Given:
µ=3
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b)Evaluating at k=0,1,2:
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P(x≥3)= 1 - f(0) - f(1) - f(2)= 1- 0.0498 - 0.1494 - 0.2240 =0.5768