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Leya [2.2K]
2 years ago
9

Given the polynomial bellow which statement is true?

Mathematics
1 answer:
lions [1.4K]2 years ago
5 0

Answer:

I think its A

Step-by-step explanation:

I factored the polynomial and its factors turned out to be (x-1)(x^2-2x-4), which eliminated the possibilities of 2 and 3. Then i replaced the (-1) in the place of the x and it turned out to be equal to 2, making the first statement true.

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What do the differences between the points (as shown on the graph) represent?
pishuonlain [190]

Answer:

They represent the rise and run of the graph.

Step-by-step explanation:

The difference between the x-axis of the points represents the "run" of the graph (or how much you should run along x-axis to get to the next point.)

The difference between the y-axis of of the points represents the "rise" of the graph (or how much you should rise up the y-xis to get to the next point).

The ratio of rise to run is the slope of the graph, which tells us  how many steps should we take on the y-axis for every step we move forward on the x-axis.

8 0
3 years ago
What are the steps in solving the equation 4(2x + 3) = 10x?
Dmitry [639]
First you distribute 4 to 2x and 3. Then after you do that you get 8x+12=10x
3 0
3 years ago
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A certain television is advertised as a 38-inch TV (the diagonal length). If the height
natali 33 [55]

Answer: 28.6

Step-by-step explanation:

3 0
3 years ago
A researcher would like to estimate the proportion of all children that have been diagnosed with Autism Spectrum Disorder (ASD)
aliina [53]

Answer:

The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.

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 interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

M = z\sqrt{\frac{\pi(1-\pi)}{n}} is the margin of error.

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

We have that:

M = 0.02, \pi = 0.0147

So

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

0.02 = 1.96\sqrt{\frac{0.0147*(1-0.0147)}{n}}

0.02\sqrt{n} = 0.2359

\sqrt{n} = 11.79

n = 139.1

The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.

4 0
3 years ago
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Two numbers have a sum of 33. The same two numbers have a difference of 13. What are the two numbers?
monitta
The two numbers are 10 and 23.
4 0
3 years ago
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