Solve the problem.The earth, Jupiter, Saturn, and Neptune all revolve around the sun. The earth takes 1 year, Jupiter approximately 12 years, Saturn approximately 30 years, and Neptune approximately 165 years to make a complete revolution. How often will Jupiter, Saturn, and Neptune appear in the same direction in the night sky as seen from earth?[Hint: Find the LCM of 12, 30, and 165]
A. Every 660 years
B. Every 3300 years
C. Every 1980 years
D. Every 330 years
Answer: A
Mathematics
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a. 
b. 
c. 
d. 
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Factor completely. If the polynomial cannot be factored, say it is prime.x2 + 2x - 15
A. (x - 5)(x + 1) B. prime C. (x + 5)(x - 3) D. (x - 5)(x + 3)
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Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.1
? 7
A. 8
B. 49
C. 7
D. 11
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Use the definition or identities to find the exact value of the indicated trigonometric function of the acute angle ?.sec ? = 
Find cot ?.
A. 
B. 
C. 
D. 
Mathematics