Solve the problem.A straight trail with a uniform inclination of 17° leads from a lodge at an elevation of 1000 feet to a mountain lake at an elevation of 6300 feet. What is the length of the trail (to the nearest foot)?
A. 21,548 feet
B. 5542 feet
C. 6588 feet
D. 18,128 feet
Answer: D
Mathematics
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Solve the problem.Two trains leave a train station at the same time. One travels east at 7 miles per hour. The other train travels west at 11 miles per hour. In how many hours will the two trains be 144 miles apart?
A. 16 hr B. 8 hr C. 4 hr D. 8.5 hr
Mathematics
Perform the indicated operations and simplify the result so there are no quotients to complete the identity.
- 
= ?
A. sin ? tan ? B. 1 + cot ? C. -2 tan2? D. sec ? csc ?
Mathematics
Divide.
A. - 
x4y3 + 
xy + 
B. - 
x4y3 - 
xy + 6
C. - 
x4y3 - 
xy + 
D. - 
x4y6 - 4xy + 
Mathematics
Evaluate the integral 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics