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antiseptic1488 [7]
2 years ago
10

Michael is 3 times as old as Brandon 18 years ago, Michael was 9 times as old as Brandon.

Mathematics
2 answers:
12345 [234]2 years ago
8 0

Answer:  Age of Brandon is 24 years.

Age of Michael is 72 years.

Step-by-step explanation:

Since we have given that

Michael is 3 times as old as Brandon .

Let the age of Brandon be 'x'.

Let the age of Michael be 3x

According to question, 18 years ago, Michael was 9 times as old as Brandon.

18 years ago,

Age of Brandon was x-18

Age of Michael was 3x-18

So, our equation becomes,

9(x-18)=3x-18\\\\9x-162=3x-18\\\\9x-3x=-18+162\\\\6x=144\\\\x=\frac{144}{6}\\\\x=24

Hence, Age of Brandon is 24 years.

Age of Michael is 24×3=72 years.

Harman [31]2 years ago
5 0
3b-18=9(b-18)
<span>3b-18=9b-162
</span>6b=144
b=24
3b=72
<span>Brandon is 24, Michael is 72.</span>
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Null Hypothesis (H₀): The sample data occurs purely from chance.

Alternative Hypothesis (H₁): The sample data is influenced by some non-random cause.

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