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ipn [44]
3 years ago
6

What’s the equation of the line

Mathematics
2 answers:
vova2212 [387]3 years ago
4 0

Answer:

y  = - \frac{1}{3}x + 5

Step-by-step explanation:

Consider two points through which the line passes.

Let it be ( 0 , 5 ) and ( 6 , 3 )

Step 1 : Find slope

    Slope, m = \frac{y_2 - y_ 1 }{x_2 - x_1}

                 = \frac{3-5}{6-0} \\\\=\frac{-2}{6}\\\\= -\frac{1}{3}

Step 2 : Find the equation of the line passing through the points.

       ( y - y_1) = m (x  - x_1)\\\\(y - 5) = -\frac{1}{3} ( x - 0) \\\\y = -\frac{1}{3}x  + 5

Sergio039 [100]3 years ago
3 0

Answer:

y=8 and x =10

Step-by-step explanation:

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Answer:

Step-by-step explanation:

Option 1:

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Option 2:

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Option 3:

4(m + 3) = 4m + 12 (one of the right answers)

Option 4:

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A poll conducted in 2013 found that 55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard
alina1380 [7]

Answer:

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

Step-by-step explanation:

Confidence interval:

A confidence interval has the following format:

M \pm zs

In which M is the sample mean, z is related to the confidence level and s is the standard error.

55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.2%.

This means that M = 55, s = 2.2

99% confidence level

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Lower bound of the interval:

M - zs = 55 - 2.575*2.2 = 49.34

Upper bound:

M + zs = 55 + 2.575*2.2 = 60.66

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

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