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1 year ago

Which of the following are in the correct order from least to greatest?

Mathematics

2 answers:

Cloud [144]1 year ago

7 0

The first option because turn them all into degrees and it says:
54, 60, 90, 120, 255

Rina8888 [55]1 year ago

6 0

Answer:- $\frac{3\pi}{10},60^{\circ},\frac{\pi}{2},\frac{2\pi}{3},255^{\circ}$

Explanation:-

Substitute $\pi=180^{\circ}$ , we get

1. Correct.

$\frac{3\pi}{10},60^{\circ},\frac{\pi}{2},\frac{2\pi}{3},255^{\circ}$

=54°,60°,90°,120°,255°

2. Not correct.

255° is not less than 60.°

3. Not correct.

$\frac{\pi}{2}$ =90° which is not less than 60°.

4. Not correct

255° is not less than 60°.

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The confidence interval would be (0.122, 0.278).

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2 years ago

The probability density function of the time to failure of an electronic component in a copier (in hours) is f(x) = (e^-x/1076)/

kozerog [31]

Answer:

(a) 0.06154

(b) 0.2389

(d) 2478

Step-by-step explanation:

probability density function of the time to failure of an electronic component in a copier (in hours) is

P(x) = 1/1076e^−x/1076

λ = 1/1076

A) A component lasts more than 3000 hours before failure:

P(x>3000) = 1 − e^−3000/1076

= 0.06154

B) A component fails in the interval from 1000 to 2000 hours:

P(1000>x>2000) =1 − e^−2000/1076 − 1 +e^−1000/1076 = e^−1000/1076 − e^−2000/1076 = 0.3948 − 0.1559

= 0.2389

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P(x<1000) = 0.6052

D) The number of hours at which 10% of all components have failed:

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4 0

1 year ago

If cyanide in a stream next to a gold mine increases from 240 ppm to 360 ppm, what percent increase is this?

avanturin [10]

Given :

Initial concentration , 240 ppm .

Final concentration , 360 ppm .

To Find :

Percent increase.

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Therefore , percent increase is 50 % .

Hence , this is the required solution .

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