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Anettt [7]
3 years ago
8

Find the inequality represented by the graph.

Mathematics
1 answer:
spin [16.1K]3 years ago
6 0

Answer:

y

Step-by-step explanation:

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Many people feel that the drying of pavement marking paint is much too slow. You spend several days looking for the fastest dryi
slavikrds [6]

Answer:

21

Step-by-step explanation:

Using<em> Simple Random Sampling</em>, we can estimate the sample size by the formula

\bf n=\frac{Z^2S^2}{e^2}

where  

n = sample size

Z = the z-score corresponding to the confidence level 99.5%

S = the assumed standard deviation = 3 seconds

e = margin of error = 2 seconds

<em>It is worth noticing that the higher the confidence level, the larger the sample should be. </em>

The z-score corresponding to a confidence level of 99.5% can be obtained either with a table or the computer and equals

Z = 3.023

Replacing the values in our formula

\bf n=\frac{(3.023)^23^2}{2^2}=20.5616\approx 21

So the size of the sample should be at least 21.

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2 years ago
Simplify by distributing: 3(x + 4)
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Answer:

3x+12

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
Explain why the equation 5丨x丨-7=7 has only one solution?
Rama09 [41]
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