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Tutor profile: Keith J.

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Keith J.
Middle School Math Teacher/Tutor for 20 years
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Questions

Subject: Geometry

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Question:

How does one determine the interior angles in a triangle using the sum of interior angles? If angle A is 38 degrees, angle B is x degrees, and angle C is x+2 degrees, What is the value of angle B and angle c?

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Keith J.
Answer:

The problem can be solved this way: 38 +x + x +2 = 180 40 + 2x=180 2x=140 x=70 x+2=72 angle B = 70 degrees angle C=72 degrees

Subject: Pre-Algebra

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Question:

What percent of 125 is 40?

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Keith J.
Answer:

40/125 is equal to n/100 the answer is 32%

Subject: Algebra

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Question:

Convert the following quadratic equation from vertex form to standard form. f(x) =-2(x-4)^2 +5. After converting this equation to standard form, identify the coefficients A,B, and C.

Inactive
Keith J.
Answer:

The standard form of this equation is -2x^2 +16x -27. A= -2; B=16; and C=-27

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