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Reil [10]
3 years ago
10

What are the values of a, b, and c in the quadratic equation 0 = 5x – 4x2 – 2?

Mathematics
1 answer:
Sever21 [200]3 years ago
9 0

Answer:

a = -4

b = 5

c = -2

(That's the 3rd line you posted)

Step-by-step explanation:

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Wat is da closest answer to 3723.4 divided by 27.1
aev [14]

Answer:

It’s 137.39

Step-by-step explanation:

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BRAINLIESTT ASAP! PLEASE HELP ME :)<br> thanks!
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Answer:

B

Step-by-step explanation:

Please see the answer in the picture attached below.

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You don't need to find the exact value of the angle N3 in oder to choose the right answers from A,B,C,D.

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7 0
3 years ago
A realtor would like to create a 95% confidence interval for the average price of a house in Franklin County, Ohio. To accomplis
VMariaS [17]

Answer:

320128-1.96\frac{50324}{\sqrt{529}}=315839.52    

320128+1.96\frac{50324}{\sqrt{529}}=324416.48    

So on this case the 95% confidence interval would be given by (315839.52;324416.48)    

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X=320128 represent the sample mean

\mu population mean (variable of interest)

\sigma=50324 represent the population standard deviation

n=529 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

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

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that z_{\alpha/2}=1.96

Now we have everything in order to replace into formula (1):

320128-1.96\frac{50324}{\sqrt{529}}=315839.52    

320128+1.96\frac{50324}{\sqrt{529}}=324416.48    

So on this case the 95% confidence interval would be given by (315839.52;324416.48)    

8 0
3 years ago
(08.05, 08.06 MC)
natali 33 [55]
Bbbbbbbbbbbbbbbbbbbbb

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1 year ago
Explain where to place the decimal point in the product for the expression 0.5 × 0.03
djyliett [7]
The Answer is 0.15, you count all the decimal points places and move that amount.
8 0
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