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eduard
3 years ago
7

Miles bought a car that cost $23,556.to the nearest ten thousand,how much did the car cost

Mathematics
1 answer:
laila [671]3 years ago
3 0
$20,000
In word form. he has twenty three thousand five hundred and fifty six, so we look to the digit next to the thousands, 3, and since its below 5, we keep 2 the same.
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Write the expression as a single logarithm 7log(x) y + 6 log(b) x
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Answer: log(x)^{7y}+log(b)^{6x}=log(x^{7y}b^{6x}).


Step-by-step explanation:

Given logarithm expression

7log(x)^y + 6 log(b)^x.

We need to write it as a single logarithm expression.

First we need to apply exponent rule of logs to remove 7 and 6 in front of logs.

n log(p) = log(p)^n

7log(x)^y + 6 log(b)^x.= log(x)^{7y}+log(b)^{6x}.

Now, we need to apply product rule of logs log(p)+log(q) = log(pq).

log(x)^{7y}+log(b)^{6x}=log(x^{7y}b^{6x}).

Therefore, final answer is log(x)^{7y}+log(b)^{6x}=log(x^{7y}b^{6x}).




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4 years ago
Of the population of all fruit flies we wish to give a 90% confidence interval for the fraction which possess a gene which gives
Eva8 [605]

Answer:

The margin of error for the 90% confidence interval is of 0.038.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

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The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

To this end we have obtained a random sample of 400 fruit flies. We find that 280 of the flies in the sample possess the gene.

This means that n = 400, \pi = \frac{280}{400} = 0.7

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

Margin of error:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.645\sqrt{\frac{0.7*0.3}{400}}

M = 0.038

The margin of error for the 90% confidence interval is of 0.038.

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3 years ago
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Answer:

I think it is c

Step-by-step explanation:


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As razões que se aplicam são as seguintes:

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