Hunter W.

Chemical Engineering Student

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Trigonometry

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Question:

In a right triangle ABC, with angle A equal to 90 degrees, find angle B and C so that Sin(B) = Cos(B).

Hunter W.

Answer:

Sin(B) = b/h Cos(B)= c/h Sin(B) = Cos(B) so b/h = c/h so b = c because b = c, we know triangle is isosceles angles B and C must be 45 degrees

Basic Chemistry

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Question:

What volume of 10.0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4?

Hunter W.

Answer:

M1V1=M2V2 10.0 (X) = 4.0 (0.50) 10X=2 X=0.20L

Algebra

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Question:

Solve the equation (1/2)(x+5) - 4 = (1/3)(2x-1)

Hunter W.

Answer:

6 ((1/2)(x+5) - 4) = 6 ((1/3)(2x-1) 3(x+5) - 24 = 2(2x-1) 3x + 15 -24 = 4x - 2 3x - 9 (-3x) = 4x - 2 (-3x) -9 = x - 2 -7 = x

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