An airplane can fly with the wind a distance of 920 miles in 4 hours. However, the return trip against the wind takes 5 hours. Find the speed of the plane in still air and the speed of the wind.
A. 211 mph, 19 mph
B. 203 mph, 27 mph
C. 207 mph, 22 mph
D. 207 mph, 23 mph
E. 230 mph, 23 mph
Answer: D
You might also like to view...
Add.
A. 1023 B. 1048 C. 1123 D. 1148
Find the intersection of the given intervals.(-?, 2) ? [-6, 13)
A. (2, 13) B. (-?, -6] C. [-6, 2) D. (-?, 13)
Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima. If necessary, round answers to two decimal places.f(x) = 2 + 8x - x2; (-5, 5)
A. local maximum at (-4, 50) B. local minimum at (-4, 18) C. local minimum at (4, 50) D. local maximum at (4, 18)
Find the domain and range of the function.f(x) = 3x2 - 30x + 82
A. Domain: (-?, ?); Range: [7, ?) B. Domain: (-?, ?); Range: [0, ?) C. Domain: (-?, ?); Range: (-?, 0] D. Domain: (-?, ?); Range: (-?, 5]