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pychu [463]
3 years ago
11

An artist mixes 2 parts blue paint and 3 parts yellow paint to get a shade of green. How many parts blue paint should the artist

mic with 12 yellow paint to get the same shade green
Mathematics
1 answer:
Makovka662 [10]3 years ago
5 0

Answer:

8 blue paint

Step-by-step explanation:

3 yellow paint with 2 blue paint gave the mixture

12 yellow paints will give (12 x 2)/3 blue paint to give the mixture

blue paint required= 24/3 = 8 blue points

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Step-by-step explanation:

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3 years ago
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In a sample of 679 new websites registered on the Internet, 42 were anonymous (i.e., they shielded their name and contact inform
Semmy [17]

Answer:

95% Confidence interval:  (0.0429,0.0791)      

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 679

Number of anonymous websites, x = 42

\hat{p} = \dfrac{x}{n} = \dfrac{42}{679} = 0.0618

95% Confidence interval:

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

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

Putting the values, we get:

0.0618\pm 1.96(\sqrt{\dfrac{0.0618(1-0.0618)}{679}}) = 0.0618\pm 0.0181\\\\=(0.0429,0.0791)

is the required confidence interval for proportion of all new websites that were anonymous.

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3 years ago
What is 4x - 2 = 22 8x x =
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