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IrinaVladis [17]
3 years ago
13

A plane flies 1140miles at a speed of 240mph. how long does it take? :)

Mathematics
2 answers:
olchik [2.2K]3 years ago
3 0
1140/240 =  4.75 hours
alexgriva [62]3 years ago
3 0
The speed is the ration of the distance to time

speed=240 m/h
distance=1140 mile

so the time elapsed= distance ÷ speed = 1140 / 240 = 4.75 hours
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Find the absolute maximum and absolute minimum for f (x )equals x cubed minus 2 x squared minus 4 x plus 2 on the interval 0 les
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9514 1404 393

Answer:

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  • minimum: -6

Step-by-step explanation:

The extrema will be at the ends of the interval or at a critical point within the interval.

The derivative of the function is ...

  f'(x) = 3x² -4x -4 = (x -2)(3x +2)

It is zero at x=-2/3 and at x=2. Only the latter critical point is in the interval. Since the leading coefficient of this cubic is positive, the right-most critical point is a local minimum. The coordinates of interest in this interval are ...

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The absolute maximum on the interval is f(0) = 2.

The absolute minimum on the interval is f(2) = -6.

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