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stellarik [79]
4 years ago
14

4.36 question help to get a b in? math, alexandria pappas must average 80 on five tests. scores on the first four tests were 828

2?, 7878?, 8282?, and 7777. what is the lowest score that she can get on the last test and still get a? b
Mathematics
1 answer:
vaieri [72.5K]4 years ago
4 0
(82 + 78 + 82 + 77 + x) / 5 = 80
319 + x = 80 * 5
319 + x = 400
x = 400 - 319
x = 81 <== she can get an 81 on it and still get a B
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Answer:

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saveliy_v [14]
This is the answer to the problem

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What is the fraction twelve twentieths in its simplest form
Alla [95]
You mean \frac{12}{20} or \frac{20}{12} ?

If you had meant, \frac{12}{20}, then the simplest form of this fraction would be - \frac{3}{5}

Divide both parts of the fraction by 4, and you get \frac{3}{5}the simplest form of the fraction.
Finding out the simplest form of a given fraction is nothing else than cancelation.

Flop it, you have with you - \frac{20}{12}
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If you had meant \frac{20}{12}, then this will certainly be of any use to you.

HOW TO UNDERSTAND THAT THE FRACTION IS IN ITS SIMPLEST FORM?
Maybe, you are just simplifying and simplifying...but you don't even know when to stop. You can understand whether a fraction is in its simplest form or not by seeing that the numerator and the denominator have a common factor to divide it by, or not.

For instance, consider the case here - \frac{3}{5} or \frac{5}{3}<span>. We can't divide it any further. So, we know that it is in its simplest form.
</span>
L O N G Process:
Well, if you want to divide it by the smallest common factor to its larger, then --
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1) 
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2) 
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That took much longer, right.
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3 0
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sergij07 [2.7K]

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zvonat [6]
The common factors are 1, 3, 6, and 9.
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