Simplify.
A. 
B. 
C. 12x
D. 6x
Answer: C
Mathematics
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Solve the problem.A ship sailing parallel to shore sights a lighthouse at an angle of 15° from its direction of travel. After traveling 3 miles farther, the angle is 21°. At that time, how far is the ship from the lighthouse? If necessary, round to the nearest hundredth of a mile.
A. 7.43 mi B. 2.17 mi C. 3 mi D. 10.29 mi
Mathematics
Solve the problem.The half-life of silicon-32 is 710 years. If 60 grams is present now, how much will be present in 300 years? (Round your answer to three decimal places.)
A. 3.208 B. 0 C. 58.268 D. 44.767
Mathematics
Prove the identity.
?
What will be an ideal response?
Mathematics
Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.- 5
+ 13
A. 7
B. 17
C. 7
D. 18
Mathematics