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Tutor profile: Allison M.

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Allison M.
Math Tutor
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Questions

Subject:Basic Math

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Question:

What is 40% of 1200?

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Allison M.

'of' means to multiply, Therefore: 40% of 1200 = 40% X 1200 40% is the same as 40 / 100, Therefore 40% X 1200 = 40/100 X 1200 = 40 X 12 = 480

Subject:Statistics

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Question:

In a pond, there are 10 goldfish, 3 angel fish and 5 guppies . If a fish is selected at random, what is the probability that the fish is a guppy?

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Allison M.

Probability of an event = # of desired event / total # of possible outcomes Probability of selecting a guppy P(Guppy) = # of guppies in pond divided by total # of fish in the pond # of guppies in pond = 5 total # of fish in the pond = 10 + 3 + 5 = 18 Therefore: P(Guppy) = 5 / 18 OR 0.278 (rounded to 3 decimal places)

Subject:Algebra

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Question:

If 2x + 4x = 12 Find x

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Allison M.

2x + 4x = 12 Adding like terms: 2x + 4x = 6x Therefore: 6x = 12 Solving for x by dividing both sides of the equation by 6: Left side: 6x divided by 6 = x Right side: 12 divided by 6 = 2 Equation becomes: x = 2 Therefore answer is: x = 2

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