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Brilliant_brown [7]
3 years ago
7

What is the conjugate? a - square root of a - 1

Mathematics
2 answers:
alexdok [17]3 years ago
7 0

Answer:

-1

Step-by-step explanation:

earnstyle [38]3 years ago
5 0

Answer:

The conjugate would just be a + square root of a-1

Step-by-step explanation:

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Find the slope of the line that contains the points:
Semenov [28]

Answer:

slope is 1

Step-by-step explanation:

5-3/-4--6 = 2/2 = 1

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3 years ago
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-3(5z 24) 2=2(3-2z)-4
zhenek [66]

Answer:

−

364 z + 10

Step-by-step explanation:

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4 years ago
Which linear system of equations does the matrix represent?<br><br> -3 5 | 15<br> 2 3 | -10
Gre4nikov [31]
Actually the answer is
-3x + 5y = 15
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4 0
4 years ago
The Information Technology Department at a large university wishes to estimate the proportion of students living in the dormitor
nadya68 [22]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

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".  

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.05 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We can use as an estimator for p \hat p =0.5. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

3 0
3 years ago
Consider the sequence Two-fourths, three-fifths, four-sixths, StartFraction 5 Over 7 EndFraction, ellipsis Which statement descr
Phoenix [80]

Answer:

The sequence converges to 1

Step-by-step explanation:

Given

\frac{2}{4}. \frac{3}{5}, \frac{4}{6}, \frac{5}{7},...

Require

Description of the sequence

The given sequence follows:

\frac{2}{4}. \frac{3}{5}, \frac{4}{6}, \frac{5}{7},... \frac{n+1}{n+3}

i.e.

T_n = \frac{n+1}{n+3}

For every term,

\frac{n+1}{n+3} < 1

In other words,

as the value of n increases, \frac{n+1}{n+3} approaches 1

<em>Hence, (c) is true</em>

6 0
3 years ago
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