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Mrac [35]
3 years ago
10

Suppose a college surveyed its students and found that two-thirds of them sleep at least seven hours each night. on a campus of

918 students, how many students could be expected to sleep at least seven hours each night?
Mathematics
1 answer:
Rus_ich [418]3 years ago
4 0
The answer is <span>606 students.

2/3 is equivalent to 0.66

You multiply 918 and 0.66

918 x 0.66 = </span><span>605.88.

</span><span>You round 605.88 to the nearest whole which is 606 students.</span>
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You have to do a little subtracting and a little interpreting to get the answer. First you must assume that the bee travels in a straight line. This is math so we can assume this is true, although thousands would disagree.

Second you must assume that because it is loaded with nectar that it travels at a slower rate (not an unreasonable assumption).

Third you have to assume that the distance there is the same distance as coming back. Again this is math. We can make this assumption.

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6 m/s *t = 4 m/s (240 - t)      Remove the brackets on the right.

6 * t = 4*240 - 4t                  Combine the like terms on the right.

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6t + 4t = 960 - 4t + 4t          Combine

10t = 960                              Divide both sides by 10

10t/10 = 960/10                    Do the division

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Find the distance

d = ?

r = 6 m/s

t = 96 second

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