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Elanso [62]
3 years ago
13

Solve for the given variable

Mathematics
1 answer:
Aleks04 [339]3 years ago
7 0

Answer:

42 degrees

Step-by-step explanation:

Angles in a triangle equal 180

180-(37+90)=53

Angles on a line equal 180

180-53=127

127=3b+1

126=3b

b=42

42 degrees

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The angles of triangle abc are in the ratio of 8:3:4. what is the measure the smallest angle?
kupik [55]
All angles in a triangle always equal 180 degrees, so to solve this problem you must set 8,3,4 equal to 180. 8x + 3x + 4x = 180. 15x = 180. 180/15 = 12. x = 12. Now you take the value of x and multiply it by the angle you are trying to find. 3(12) = 36. 
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3 years ago
Sin 0 &lt; 0, tan 0 &lt; 0<br> The angle 0 lies in which quadrant?
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A poll conducted in 2013 found that 52% of u.s. adult twitter users get at least some news on twitter.40. the standard error for
FinnZ [79.3K]
The 99% confidence interval for the population proportion is given by

sample \ proportion \pm 2.575\times standard \ error

Given that 52% = 0.52 is the standard proportion and the standard error is 2.4% = 0.024.

Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is given by

0.52\pm2.575\times0.024=0.52\pm0.0618=(0.4582, \ 0.5818)

</span>Therefore, the <span>99% confidence interval for the fraction of u.s. adult twitter users who get some news on twitter is 45.82% and 58.18%.

The interpretation of the confidence interval</span> is as follows: "We are 99% confident that the fraction of U.S. adult twiter users who get some news on twitter is between 45.82% and 58.18%.
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4 years ago
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