3 years ago

1. Samira wants to analyze the effect of drinking alcohol on the functioning capacity of the

Mathematics

1 answer:

mafiozo [28]3 years ago

8 0

Where are the answer choices lol

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Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:

fredd [130]

Oooo ok
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But answer is 13

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3 years ago

What is 2.5 (x - 1) + 4.5 (-x - 2)

yaroslaw [1]

Answer:

2.5(x-1)+4.5(-x-2)

2.5x-2.5-4.5x-9

-2x-11.5

Step-by-step explanation:

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3 years ago

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3 years ago

The weekly earnings of students in one age group are normally distributed with a standard deviation of 47 dollars. A researcher

ELEN [110]

Answer:

Option D) 340

Step-by-step explanation:

We are given the following in the question:

Alpha, α = 0.05

Population standard deviation, σ = $47

Margin of error = 5

95% Confidence Interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

$\text{Margin of error} = z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

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

$5 = 1.96(\dfrac{47}{\sqrt{n}} )\\\\\sqrt{n} = \dfrac{47\times 1.96}{5}\\\\n = 339.443776\\\Rightarrow n \approx 340$

Thus, the correct answer is

Option D) 340

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3 years ago

This mapping shows a functional relationship when f(x)=4 what is the value of x

Oksana_A [137]

If.. f of x equals four, than it should be four that you plug in.

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3 years ago