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Mrrafil [7]
3 years ago
11

3.

Mathematics
2 answers:
bagirrra123 [75]3 years ago
7 0

Answer:

D. k = -2

Step-by-step explanation:

<em>constant of variation:</em>

<em />k=\frac{f(x)}{x}

=\frac{2}{-1}

= -2

<em>so the right answer is -2</em>

<em>hope it helps...</em>

<em>have a great day!!</em>

Ede4ka [16]3 years ago
4 0

Answer:

D. k = –2

Step-by-step explanation:

Answer:

K = -2

Step-by-step explanation:

If y varies directly as x, k (constant) can be found by dividing the y-coordinate by the x-coordinate.

...............................................................................................................................................

A.. k= 2

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Answer:

190

Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}= = 2.58

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Now,

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on substituting the respective values, we get

= (\frac{z_{0.005}\sigma}{E})^2

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