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3 years ago

A motorboat takes

1 answer:

5 0

A motorboat takes 3 hours to travel 144 mi going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
----------------
144/3 = 48 mph upstream

144/2 = 72 mph downstream
The boat's speed is the average = 60 mph
The current is the difference = 72-60 = 12 mph

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babymother [125]

Answer:

What is the question. Please rewrite the question.

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3 years ago

Find in cm the diameter of a circle whose radius is 85 mm.

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T = p + 50

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The only way i can think of working out this question is this:

t = time p = phone calls

insert what we know:-

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switch (you don’t HAVE to do this) :-

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3 years ago

The volume of a triangular prism is 437 units.The height is 23 units. What is the area of the base?

inessss [21]

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3 years ago

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Which set of points is not coplanar?

spin [16.1K]

we know that

Coplanar points are three or more points which lie in the same plane. Remember that a plane is a flat surface which extends without end in all directions. Any three points in 3-dimensional space determine a plane.

case a) points A, B, E

Any group of three points determines a plane

The points A,B,E are coplanar

case b) points A, B,C,E

The four points do not belong to the same plane

The points A,B,C,E are not coplanar

case c) points B, C, D

Any group of three points determines a plane

The points B, C, D are coplanar

case d) points A,B, C, D

The base of the pyramid is a flat surface, the four points lie in the same plane

The points A,B, C, D are coplanar

therefore

the answer is the option

points A, B, C, E are not coplanar

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3 years ago

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