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Minchanka [31]
2 years ago
10

What is the domain of the following quadratic function?

Mathematics
1 answer:
DENIUS [597]2 years ago
7 0
Im pretty sure it is D. The domain is all real numbers, so by plugging in any number of your choice, a point will be plotted.
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Martin has $200 in his savings account. he is looking at two investment plans. under plan A, he will increase his account balanc
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I believe the answer is $300.
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3 years ago
Read 2 more answers
What is 36x^9y^4/4x^7y^3
motikmotik
Get rid of all common factors.
36/4 = 9
x^9/x^7 = x^2
y^4/y^3 = y

\boxed{\frac{36x^9y^4}{4x^7y^3}=9x^2y}
6 0
3 years ago
Suppose that a random sample of 10 adults has a mean score of 62 on a standardized personality test, with a standard deviation o
aniked [119]

Answer:

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{4}{\sqrt{10}} = 2.08

The lower end of the interval is the sample mean subtracted by M. So it is 62 - 2.08 = 59.92

The upper end of the interval is the sample mean added to M. So it is 62 + 2.08 = 64.08.

The 90% confidence interval for the mean score of all takers of this test is between 59.92 and 64.08. The lower end is 59.92, and the upper end is 64.08.

5 0
2 years ago
Write a numerical expression for 6 times the sum of 3 and 7
kompoz [17]

Answer:

6(3+7)

Step-by-step explanation:

i believe that is correct

6 0
3 years ago
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I’m not sure but i really really really like points!!!!
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3 years ago
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