Use front-end rounding to estimate the sum:
?
?
A. 1,270
B. 1,370
C. 1,400
D. 1,500
Answer: A
Mathematics
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A. y < 0 B. y ? 0 C. y ? 0 D. y > 0
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A. 
B. 
C. 
D. 
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 2, y = 10
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics