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Zinaida [17]
4 years ago
8

Three fifths plus one fourth

Mathematics
1 answer:
kupik [55]4 years ago
4 0

Answer:

17/20

Step-by-step explanation:

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Which statement best describes a chord of a circle?
Ugo [173]
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6 0
4 years ago
Worth 10 points please help me
Bumek [7]

Answer:

the co_ordinate of d is 0

3 0
3 years ago
Jonah wants to construct a confidence interval using 90% confidence to estimate what proportion of silicon wafers at his factory
Nimfa-mama [501]

Answer:

170

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

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is of:

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

Assume:

\pi = 0.06

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.

What is the smallest sample size required to obtain the desired margin of error?

This is n for which M = 0.03. So

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

0.03 = 1.645\sqrt{\frac{0.06*0.94}{n}}

0.03\sqrt{n} = 1.645\sqrt{0.06*0.94}

\sqrt{n} = \frac{1.645\sqrt{0.06*0.94}}{0.03}

(\sqrt{n})^2 = (\frac{1.645\sqrt{0.06*0.94}}{0.03})^2

n = 169.6

Rounding up, 170.

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3 years ago
Which point is a distance of 5 units from the point (1,9)
Vesna [10]
I believe it's 5,6 

Hope this helped!
3 0
3 years ago
3 3/8 divided by 2 1/4 =
denpristay [2]

Answer:

1.5 or 1/5

Step-by-step explanation:

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators.

6 0
3 years ago
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