Find the foci of the ellipse.
+ 
= 1
A. (2, -2+ 
), (2, -2 - 
)
B. (- 
, -2), (
, -2)
C. (-2, -2), (6, -2)
D. (2 + 
, -2), (2 - 
, -2)
Answer: D
Mathematics
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Use the requested method to find the product.720 ? 78; use the lattice method
A. 56,150 B. 56,170 C. 56,160 D. 56,260
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Write the phrase as an algebraic expression. Let x represent the unknown number.thirteen times a number
A. -13x B. 13 ÷ x C. 13x D. 13+ x
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Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 + 
x - 
= 0
A. 0.75 B. -1.25, 0.75 C. -1 D. -0.781, 1.281
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Solve the equation. 0.42(50) + 0.6x = 0.5(50 + x)
A. {40} B. {50} C. {20} D. {30}
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