3 years ago

A. Is (- 10, 21) a solution of y = - 3x - 9? b. Is (6, - 27) a solution of y= - 3x-9?

1 answer:

4 0

A) yes; 21=21
B) yes; -18=-18

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alexdok [17]

Answer:

Hope this helps. Let me know if it doesn't and I'll try to help out. :)

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3 years ago

jenyasd209 [6]

The given values are:

p = 22% = 0.22

Zc = 1.645 at 90% confidence level.

margin of error, E = 0.04

The formula we can use here is:

E = sqrt(pq/n) * Zc

0.04 = sqrt(0.22*(1-0.22)/n)*1.645

n = (0.22*(1-0.22))*(1.645/0.04)^2

n = 290.22

hence minimum sample size = 290

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3 years ago

Kamila [148]

I hope this helps you

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laiz [17]

Answer:

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2 years ago

Vsevolod [243]

1/2 then 1/3 then 1/6

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3 years ago