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Tutor profile: Sarah C.

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Sarah C.
Math & Science Make Sense!
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Questions

Subject: Trigonometry

TutorMe
Question:

You are flying a kite, your string measures 200 feet when fully unwound. How high above the ground is your kite flying if you are holding the string at 61 degrees from the ground, with your string fully unwound?

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Sarah C.
Answer:

175 ft

Subject: Chemistry

TutorMe
Question:

You have distilled 4.61 mL of pure ethanol $$C_2H_6O$$ from a solution originally measuring 39.5 mL. Given C = 12.01 g/mol, H = 1.01 g/mol, O = 16.00 g/mol, and Ethanol's density = 0.7893 g/$$cm^{3}$$; calculate the moles of ethanol distilled and the molarity of the original solution.

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Sarah C.
Answer:

Moles of ethanol = 0.0790 moles, Molarity of original solution = 2.

Subject: Algebra

TutorMe
Question:

$$ f(x)= 2x^{3} + 3x^{2} -10x -15 $$ Find the values of x where f(x) = 0

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Sarah C.
Answer:

$$x=\pm \sqrt5, \frac{-3}{2}$$

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