A plane is flying with an airspeed of 160 miles per hour and heading of 140°. The wind currents are running at 41 miles per hour at 155° clockwise from due north. Use vectors to find the true course and ground speed of the plane.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
A. 196 mph with heading 147°
B. 200 mph with heading 145°
C. 190 mph with heading 143°
D. 190 mph with heading 145°
E. 200 mph with heading 143°
Answer: E
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A. 0.15 B. 0.218 C. 229 D. 0.004
Solve the problem.An arrow is fired straight up from the ground with an initial velocity of 
per second. Its height, 
in feet at any time t is given by the function 
Find the interval of time for which the height of the arrow is greater than 
A. before 
sec
B. after 
sec
C. before 
sec or after 
sec
D. between 
and 
sec
In the state of Utah, double trailer combinations cannot exceed 61 feet measured from the first trailer to the rear of the second trailer. (www.utahmc/trucking guide). If 
length of the first trailer and 
length of the second trailer including hitch/tongue, which inequality represents the constraint?
A. 
ft
B. 
ft
C. 
ft
D. 
ft
Find the perimeter (P) of each figure.
A. 56 mi B. 182 mi C. 69 mi D. 67 mi