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# Tutor profile: Dustin M.

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Dustin M.
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## Questions

### Subject:Basic Math

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Question:

What is the decimal and percent equivalent of 3/8?

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Dustin M.

If 1/4 = .25, then 1/8 = half of 1/4, or .25/2 = .125 3/8, then, = 3*.125, or .375 .375 *100 = 37.5%

### Subject:Algebra

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Question:

Create a mathematical expression to represent the following scenario: Mark is twice as old as Jim. Jim is 2 years older than Lisa, who is 6 years old. How old is Mark?

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Dustin M.

M = Mark J = Jim L = Lisa M = 2J J = L+2 L = 6 So, if L = 6, then J = L + 2 = 6 + 2 = 8. If M = 2J, then M = 2(8) = 16 years old!

### Subject:Physical Science

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Question:

What is the relationship between the frequency of a wave and its wavelength?

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Dustin M.

There is a direct inverse relationship between the parameters. As frequency increases, wavelength decreases. As frequency decreases, wavelength increases. For example, a doubling of frequency (from 2 Hz to 4 Hz) results in a halving of wavelength (from 10 cm to 5 cm)

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