Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 
(y = -x)
B. ? = 
(y = x)
C. ? = 
(x = 0)
D. ? = 0 (y = 0)
Answer: C
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Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceA projectile is fired at a speed of 1160 m/sec at an angle of 32°. How long will it take to get 29 km downrange? Round your answer to the nearest whole number.
A. 29 sec B. 27 sec C. 31 sec D. It will never get that far downrange.
City water, which is slightly chlorinated, is being used to flush a tank of heavily chlorinated water. The concentration C, in milligrams per gallon, of chlorine in the tank 
hours after flushing begins is given by
?
.
The water in the tank is safe for use when chlorine levels are less than 2.50 milligrams per gallon. For what values of t is the water in the tank safe for use? Round your answer to two decimal places.
?
A. 
hours
B. 
hours
C. 
hours
D. 
hours
Solve the problem.A network consists of 231 vertices and 3442 edges each having a different weight. Which of the following may not be true?
A. The edge with the second smallest weight must be part of the minimum spanning tree. B. The edge with the smallest weight must be part of the minimum spanning tree. C. The edge with the third smallest weight must be part of the minimum spanning tree. D. all of these must be true. E. none of these must be true.
Use mathematical induction to prove the following.0.11n < 0.11n-1
What will be an ideal response?