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DaniilM [7]
3 years ago
11

The copy machine in your office can produce 22,400 copies in 7 hours. How many copies can it produce in 21 hours?

Mathematics
1 answer:
DedPeter [7]3 years ago
8 0
The machine can produce 22 400 copies in 7 hours.

In 7 hours    22 400 copies were produced.

In 1 hour                                 22 4000/ 7    would be produced.

Therefore in 21 hours        (22 400 / 7) * 21 will be produced.

Solving this  =      22 400 * 3.           

                       =       67 200  copies.
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Find the center, vertices, and foci of the ellipse with equation 2x2 + 9y2 = 18.
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2x² + 9y²<span> = 18------> divided by 18
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Part a)
the equation of the ellipse if of the form
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Part b)
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Part c)
foci are
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c²=a²-b²-----> c²=9-2-----> c²=7-----> c=√7

the foci are
(0+√7, 0)-----> (√7,0)
(0-√7,0)------> (-√7,0)


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