2 years ago

Arrange the fractions from the largest to the smallest.

Mathematics

1 answer:

murzikaleks [220]2 years ago

7 0

Answer:

14/25, 9/20, 2/7

Hope this helps

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Solve for x: 2/7(x-2)=4x

lawyer [7]

Answer:

$x = - \frac{2}{13}$

Step-by-step explanation:

Simplify to:

$\frac{2(x - 2)}{7}$

Multiply both sides by 7

2(x-2)=28x

Divide both sides by 2

x-2=14x

Subtract x from both sides

2=14x-x

Simplify 14x-x to 13x

2=13x

Divide both sides by 13

$- \frac{2}{13} = x$

Answer:

$x = - \frac{ 2}{13}$

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2 years ago

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san4es73 [151]

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3 years ago

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kvasek [131]

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3 years ago

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student

Butoxors [25]

Answer: $(21.541,\ 23.059)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=240$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=22.3$

Standard deviation : $\sigma= 6$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.960$

Now, a confidence interval at the 95% level of confidence will be :-

$22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)$

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3 years ago

4x25x27 associate property

Pavel [41]

(4x25)x27
(100)x27
2700

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3 years ago