Find an equation of the parabola described.Focus at (-18, 0); directrix the line x = 18
A. y2 = -18x
B. x2 = -72y
C. y2 = 72x
D. y2 = -72x
Answer: D
Mathematics
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A. 38 miles B. 40 miles C. 37.94 miles D. 37.9 miles
Mathematics
Translate to a proportion and solve. 84 is 30% of what?
A. 2800 B. 28 C. 280 D. 25.2
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Rationalize the denominator. Then simplify your answer.
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A. ?
B. ?
C. ?
D. ?
E. ?
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Solve the differential equation.
= 6
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Mathematics