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4 years ago

Find the percent as a fraction. Simplify if possible.33 1/3%

Mathematics

2 answers:

hoa [83]4 years ago

7 0

Answer: 33 1/3% as a fraction is 1/3. It cannot be simplified. Hope this helps!

attashe74 [19]4 years ago

3 0

Answer:

The answer would be 100/3

Step-by-step explanation:

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Jerry best with 40 questions, out of which he answered 22 correctly. To pass the test, he needs at least 60% correct. What was h

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22?

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3 years ago

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jackie is building a doll house with a scale of 1 inch equals 12 inches. she wants to put a sofa in the doll house living room.

irakobra [83]

1 - 12
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4 years ago

- Carl is taking a trip to see his grandparents. His car gets 25 miles per gallon of

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Answer:

$54

Step-by-step explanation:

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3 years ago

The electric cooperative needs to know the mean household usage of electricity by its non-commercial customers in kWh per day. A

vekshin1

Answer:

$15.7-2.58\frac{2.3}{\sqrt{1731}}=15.6$

$15.7+2.58\frac{2.3}{\sqrt{1731}}=15.8$

We are 99% confident that the true mean of electricity comsumption is between (15.6 and 15.8) kWh

Step-by-step explanation:

Information provided

$\bar X= 15.7$ represent the sample mean for the usage of electricity

$\mu$ population mean (variable of interest)

$\sigma= 2.3$ represent the population standard deviation

n=1731 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula if we know the population deviation:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

The Confidence level provided is 0.99 or 95%, the value of significance is $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that $z_{\alpha/2}=2.58$