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aleksley [76]
3 years ago
11

Prove that 1/2 + 1/3 + ... + 1/n is not an integer

Mathematics
1 answer:
andre [41]3 years ago
3 0
Ddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
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You have to use distributive property then you combine like terms

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Work out 12+8÷(9-5) 0.018÷0.06 Express as single fraction 5/7÷2/5
Anettt [7]

Step-by-step explanation:

I don't know if the first set of numbers is all in one set, but I'll do my best to give you an answer.

Really all you need to do is use PEMDAS for the first question.

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1 2 + 8 \div (9 - 5) \\ 12 + 8 \div 4 \\ 12 + 2 \\ 14

Then to simplify that fraction next to it, notice that 0.018 is 3x 0.06.

that's a 3:1 ratio, so it ends up simplifying to this:

\frac{3}{1}

Lastly, to solve the division of that fraction. If you divide by a fraction, you multiply whatever it's dividing by its inverse.

So...

\frac{5}{7}  \div  \frac{2}{5}  \\  \frac{5}{7}  \times  \frac{5}{2}  \\  \frac{25}{14}

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3 years ago
Michelle biked 21 miles in 4 hours.
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Part A: 5.25
Average speed is 5.25 mi per hr

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