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ANEK [815]
3 years ago
6

What would be the slope for (-4,-7) (-6,4)​

Mathematics
1 answer:
Sliva [168]3 years ago
6 0

Answer:\frac{11}{-2}

Step-by-step explanation:

ok so I'm going to try to show it the best c an

m = slope

the equation you use is

\frac{y2-y1}{x2-x1} = m

so when using that formula with the cords, you get

\frac{4-(-7)}{-6-(-4)}

and then subtract everything and you'll get

\frac{11}{-2}

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Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340

Thus, the correct answer is

Option D) 340

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