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Olin [163]
3 years ago
7

What is 5 4/9 + 2 15/36 as a whole or mixed number??

Mathematics
1 answer:
pshichka [43]3 years ago
8 0
You have to add the whole numbers, which is 5 + 2 = 7.  Then you add the fractions.  In order to do that, you have to convert 4/9 to X/36 so 15/36 and 4/9 have the same denominator.  In this case, 9 is a factor of 36, so you can multiply 4/9 by 4/4 (which is like multiplying by one).  The result is 16/36.  Now add the numerators 15 + 16 = 31.  Denominator remains 36 because you do not change it when you add fractions.

The result therefore is 7 and 31/36.
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Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given mean of the population = 500 </em>

<em>Given standard deviation of the Population = 75</em>

Let 'X' be the variable in normal distribution

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<em></em>Z = \frac{410-500}{75} = - 1.2<em></em>

<u><em>Step(ii):-</em></u>

The probability that a family spends less than $410 per month

P( X < 410) = P( Z < - 1.2 )

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                 = 0.5 - A(1.2)

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<u>Final answer:-</u>

The probability that a family spends less than $410 per month

P( X < 410) = 0.1151

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