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Ira Lisetskai [31]
3 years ago
10

What is the degree of the following polynomial? 4x^2+2x+7

Mathematics
1 answer:
adelina 88 [10]3 years ago
6 0
The degree of the polynomial is 2.

to find the degree, put the polynomial in descending order with the highest exponents in front.  the highest exponent is the degree.

3x^6 - 4    (highest exponent here is 6, degree would be 6)

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Joe heard from a reliable source that only 22% of people actually sleep 8 hours or more per night. You do a survey and find 58 o
Juliette [100K]

Answer:

95% Confidence interval:  (31.32%,47.04%)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 148

Number of people who sleep for 8 hours or longer, x = 58

\hat{p} = \dfrac{x}{n} = \dfrac{58}{148} = 0.3918

95% Confidence interval:

\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

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

Putting the values, we get:

0.3918\pm 1.96(\sqrt{\dfrac{0.3918(1-0.3918)}{148}})\\\\ = 0.3918\pm 0.0786\\\\=(0.3132,0.4704)=(31.32\%,47.04\%)

(31.32%,47.04%)  is the required 95% confidence interval.

8 0
3 years ago
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DanielleElmas [232]

Answer:    

Step-by-step explanation:

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8 0
3 years ago
On new years Eve,The temperature fell by 24 degrees in a span of 6 hours by how many degrees did the temperature fall every hour
RoseWind [281]

Answer:

4 degrees

Step-by-step explanation:

24 degrees :6 hours

divide by 6 for the unit rate.

4 degrees : 1 hour

5 0
3 years ago
Read 2 more answers
3. (07.04)
Naddik [55]

Answer:

The probability  that an applicant does not get a job if he or she has an interview is 20%.

Step-by-step explanation:

  • If the applicant has been interviewed, then she/he belongs to the group of 20 people that had an interview.
  • 16 of the 20 people who were interviewed were offered a job, which means that 4 of the 20 people interviewed were not offered a job.
  • Then, 4/20= 20% of the people who were intervied did not get a job, which means that the <u>probability that an applicant does not get a job if he/she were interviewed is 20%</u>.
  • Pat attention: this probability results from analysing the probability of getting a job once you have had an interview (this condition restricts our attention to the group of 20 people who had an interview, and not to the hole group of 500 people who did apply for the job).
5 0
4 years ago
5
atroni [7]

Answer:

I believe the question says "5j + 16 - 12(-9j - 4) - 12j"  I hope I'm correct because I have almost no idea what you typed.

If you did type "5j + 16 - 12(-9j - 4) - 12j" then your answer would be 133j + 52 I believe. You never put how you would like your problem to be solved, so I simplified.

Step-by-step explanation:

Hope this helps.

5 0
3 years ago
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