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3 years ago

Put 12/15,3/5,7/15,3/7 in smallest to greatest order

Mathematics

2 answers:

elena-s [515]3 years ago

8 0

Answer:

3/7, 7/15, 3/5, 12/15

Step-by-step explanation:

You have to find the common denominator; which is 105

So the equations turn into

12/105 , 3/105, 7/105, 3/105

Then you divide the old denominator with the new denominator.

105/15= 7, 105/5=21, 105/7=15

You then multiply that number with the numerator so:

84/105, 63/105, 49/105, 45/105

Then order accordingly!

Vaselesa [24]3 years ago

4 0

12/15,7/25,3/7,3/5 should be correct because this is what my teacher taught me in fourth grade.

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Given:

The given sets are:

Set a : 200, 104, 100, 160.

Set b: 270, 400, 483, 300, x.

Mean of set a: mean of set b= 3:8

To find:

The value of x.

Solution:

Formula for mean:

$Mean=\dfrac{\text{Sum of observations}}{\text{Number of observation}}$

The mean of set of a is:

$Mean=\dfrac{200+104+100+160}{4}$

$Mean=\dfrac{564}{4}$

$Mean=141$

The mean of set of b is:

$Mean=\dfrac{270+400+483+300+x}{5}$

$Mean=\dfrac{1453+x}{5}$

It is given that,

Mean of set a: mean of set b= 3:8

$\dfrac{141}{\dfrac{1453+x}{5}}=\dfrac{3}{8}$

$\dfrac{705}{1453+x}=\dfrac{3}{8}$

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Isolate the variable x.

$5640-4359
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$1281
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Divide both sides by 3.

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$427
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Therefore, the value of x is 427.

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Answer:

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Step-by-step explanation:

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