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____ [38]
3 years ago
11

2x+8=7x-12 || -m/4+5=2 || 3x-8=-17 ||

Mathematics
1 answer:
aliina [53]3 years ago
3 0
<span>2x+8=7x-12    we put the x in a side  and the number in the other side 
5x = 20 
x= 20/5 = 4

</span><span> -m/4+5=2
</span> common denominator
-m /4  + 20/4 = 2/4   
-m +20 = 2

m = 20-2 =18

<span>3x-8=-17

3x = -17 +8 

3x = -9 

x= -9/3 = -3 </span>
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Researchers are studying the distribution of subscribers to a certain streaming service in different populations. From a random
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CI = (0.17 - 0.27)\± 1.65\sqrt{\frac{(0.17)*(0.83) + (0.27)*(0.73)}{200}}

Step-by-step explanation:

Given

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This is calculated using:

CI = \bar x \± z\frac{\sigma}{\sqrt n}

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\bar x = \bar x_1 - \bar x_2

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For a 90% confidence level, the ​z-score is 1.65.  So:

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Calculating the standard deviation \sigma

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CI = (0.17 - 0.27)\± 1.65\sqrt{\frac{(0.17)*(0.83) + (0.27)*(0.73)}{200}}

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2 years ago
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