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denis23 [38]
3 years ago
14

there are 3 good guys and three bad guys on one side of a river full of piranhas and there is a canoe big enough for two people

and the bad guys out number the good guys how do you get everyone across
Mathematics
1 answer:
labwork [276]3 years ago
4 0
If there are 3 bad guys and 3 good guys then they don't out number the good guys.
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Prove that: 5^31–5^29 is divisible by 100.
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Answer:

See explanation

Step-by-step explanation:

Consider the expression

5^{31}-5^{29}

First, factor it:

5^{31}-5^{29}=5^{29}\cdot(5^2-1)=5^{29}\cdot (25-1)=24\cdot 5^{29}

Note that

100=25\cdot 4

Then

5^{31}-5^{29}=24\cdot 5^{29}=6\cdot 4\cdot 25\cdot 5^{27}=6\cdot 100\cdot 5^{27}

This shows that number 100 is a factor of the expression 5^{31}-5^{29} and, therefore, this expression is divisible by 100.

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About 70% of Earth’s surface is covered by water. If the diameter of Earth is about 12,750 km, find the area not covered by wate
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Earth diameter = 12,750 km
Earth radius = 6,375 km
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<span> <span> <span> Earth's Entire </span></span></span><span>Surface Area     =    510,704,724 square kilometers
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</span>Surface NOT covered by water =  <span> <span> <span> 153,211,417</span></span></span><span> square kilometers</span>


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Step-by-step explanation:

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