Find a polar equation for the conic. A focus is at the pole.e = 
; directrix is perpendicular to the polar axis 4 to the left of the pole
A. r = 
B. r = 
C. r = 
D. r = 
Answer: A
Mathematics
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Find the height of the triangle using Heron's formula. Round your answer to two decimal places as needed.
A. 6.16 mm B. 2.05 mm C. 1.45 mm D. 4.36 mm
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Express the number 0.00052 in scientific notation. ?
A. 
B. ?
C. ?
D. ?
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Find all numbers for which the rational expression is not defined.
A. b = 28 B. b = 4 C. b = 0 D. b = -7
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