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3 years ago

Math help will mark brainliest

Mathematics

2 answers:

Helen [10]3 years ago

4 0

Answer:

a. -1

b. 2

Step-by-step explanation:

When the x value of g(x) is 1, the y value can be visibly seen to be -1. When the y value of g(x) is 0, the only x value which can be seen to satisfy this condition is x=2. Hope this helps!

monitta3 years ago

3 0

Answer:

1. -1

2. 2

Step-by-step explanation:

g(1) is the point on the graph where the x-coordinate is 1. Looking at the graph, we trace the point where x = 1 and see that on the line at x = 1, y is equal to -1. So, g(1) = -1.

g(x) = 0 when the line crosses the x-axis. Looking at the graph, we see that the line crosses the x-axis at the point (2, 0). This means that the x-coordinate is 2. So, one value of x for which g(x) = 0 is 2.

Hope this helps!

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Usually a ratio will compare two numbers by division

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3 years ago

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drek231 [11]

Answer:

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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In which

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The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

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This means that $n = 1012, \pi = \frac{374}{1012} = 0.3696$

95% confidence level

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How large a sample size is needed to be 95% confident with a margin of error of E?

A sample size of n is needed, and n is found when M = E.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$E = 1.96\sqrt{\frac{0.3696*0.6304}{n}}$

$E\sqrt{n} = 1.96\sqrt{0.3696*0.6304}$

$\sqrt{n} = \frac{1.96\sqrt{0.3696*0.6304}}{E}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

$n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$

A sample of $n = (\frac{1.96\sqrt{0.3696*0.6304}}{E})^2$ is needed, in which E is the desired margin of error, as a proportion. If we find a decimal value, we round up to the next whole number.

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3 years ago

Help I don’t get it..

yan [13]

Answer:

Step-by-step explanation:

the shape looks like a cube.. and maybe they say something about that outside of the picture, even but assuming that it is a cube, we know all the sides are the same.

we also know that the area of one side of the cube is 3 $\frac{1}{4}$

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use which ever from seems better to you. :)

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cestrela7 [59]

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Step-by-step explanation:

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3 years ago

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