Annie S.
Undergraduate Student
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SAT II Mathematics Level 2
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Question:
What is the distance between (-2, -3, -1) and (2, 1, 1)?
Annie S.
Answer:
d = sqrt[(2+2)^2 + (1+3)^2 + (1+1)^2)] = sqrt[16+16=4] =sqrt[36] = 6
Pre-Algebra
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Question:
3x + 9 = 11 x = ?
Annie S.
Answer:
3x + 9 = 11 3x = 2 x = 2/3
Algebra
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Question:
x^2 + 5x + 6 = 0 what is x equal to?
Annie S.
Answer:
x^2 + 5x + 6 = 0 (x + 3) (x + 2) = 0 x = -3 or x = -2
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