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Ksenya-84 [330]
3 years ago
11

Need help will give brainliest

Mathematics
1 answer:
stira [4]3 years ago
3 0

Answer:

106

Step-by-step explanation:

c(106)=x^(2)-17x+66

u put 106 into the formula by squaring 106 which gives you 11236

timesing 17 x 106 = which is 1802

then the formula looks like this c(106)=11236-1802+66

this then equals $9500, meaning the answer is 106

pls mark brainliest....:)

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kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

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We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

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Putting values, we get,

0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397

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8 0
3 years ago
Make b the subject of the formula<br><br>A=1/2bh​
r-ruslan [8.4K]

Answer:

\blue{b = \dfrac{2A}{h}}

Step-by-step explanation:

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Step 1. Switch sides.

\dfrac{1}{2}bh = A

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Step 3. Since h is multiplying b, and you want b alone, divide both sides by h.

\dfrac{bh}{h} = \dfrac{2A}{h}

Answer:

b = \dfrac{2A}{h}

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Answer:

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Step-by-step explanation:

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svetlana [45]

Answer:

I haven't learned this yet but you can ask a tutor

Step-by-step explanation:

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