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3 years ago

4 people can wash 20 service vehicles in 5 hours how long would it take 5 people to wash the same number of vehicles

Mathematics

2 answers:

Juliette [100K]3 years ago

4 0

4 hours to take five people to wash the same number of cars

krok68 [10]3 years ago

3 0

pretty sure itd take 4 hours bc 4/20=5 hours so if its 5 ppl 5/20=4.

hope it helps!

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tigry1 [53]

The vector v (-6, 6, -5) points in the direction of itself, so we start there.

We can capture all points on the line through the origin and the point (-6, 6, -5) by scaling v by an arbitrary real number t.

The line through point P and pointing in the same direction as v is parallel to the other line that passes through the origin. Then the line we want can be obtained by translating the line through the origin by a vector p that points to (-4, 5, 2), so the vector equation for this line is

r (t ) = p + t v

r (t ) = (-4, 5, 2) + t (-6, 6, -5)

r (t ) = (-4 - 6t, 5 + 6t, 2 - 5t )

To get the parametric equations, simply take out the components:

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