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densk [106]
3 years ago
9

moinca spent 4/7 hours listening beethtoven and brahms. she spent 2/5 hours listening to beethtoven. how many hours were spent l

istening to brahms?
Mathematics
1 answer:
Makovka662 [10]3 years ago
8 0
He spent 2\2 hours listening to brahms
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This will be the last prob for today but thx soo much for helping​
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Answer:

Step-by-step explanation:

If you simplify you get 0 = 19/3, which is false. So there is no solution.

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3 years ago
When 70,000 is written as 7.0 10^{n} what is the value of n ?
Lelechka [254]
70 000=7\cdot10^4\\ \\840000000=8,4\cdot10^8\\ \\0,004=4\cdot10^{-3}\\ \\0,000000123=1,23\cdot10^{-7}
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Answer 173.22÷4 and use long division to show work.
olga nikolaevna [1]
43.305 Hope this helps. 
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The difference of the squares of two terms factors as the of a sum and a difference of those terms.
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7 0
3 years ago
Arrange the fractions in increasing order 7/15, 2/3, 11/12, 5/9
RoseWind [281]
To compare fraction sizes, you have to make sure the denominators of the fractions are the same. You must find a number that is a multiple of all the denominators we currently have (15, 3, 12, 9)
The smallest number that fits this is 540
Now you must multiply the numerator and denominator of each fraction by the number that makes the denominator 540
So, for 7/15 , we multiply the top and bottom by 36, since you need to multiply 15 by 36 to get 540. This means the fraction you end up with is 252/540
For 2/3, we multiply the top and bottom by 180, since you need to multiply 3 by 180 to get 540.This means the fraction you end up with is 360/540
For 11/12, we multiply the top and bottom by 45, since you need to multiply 12 by 45 to get 540. This means that the fraction you end up with is 495/540
For 5/9, we must multiply the top and bottom by 60, since you need to multiply 9 by 60 to get 540. This means that the fraction you end up with is 300/540

Now that the hard part is out of the way, you have four fractions: 252/540, 360/540, 495/540 and 300/540. Now, you can arrange the fractions in ascending order just based on their numerator. 
So, the order would be: 252/540, 300/540, 360/540, 495/540

Now, for the final step, just convert them back to the original fractions.
So, the final answer is:
7/15, 5/9, 2/3, 11/12

Hope I helped!! xx

4 0
3 years ago
Read 2 more answers
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