1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dedylja [7]
3 years ago
5

Can you explain it and help me out please​

Mathematics
1 answer:
shusha [124]3 years ago
4 0

Answer:

D. two real solutions

Step-by-step explanation:

p²+5 = 6p

p² - 6p +5 =0

D = b² - 4ac = (-6)² - 4*(1)*5 = 36 - 20 = 16

D > 0, so this equation has 2 real solutions

You might be interested in
Willian bought 11 books. He decided to present 2 books to each of his friends and still have one book left. Find the number of f
ira [324]

Answer:

i think he has 5 friends

Step-by-step explanation:

sorry if im wrong

7 0
3 years ago
Read 2 more answers
Because of staffing decisions, managers of the Gibson-Marion Hotel are interested in the variability in the number of rooms occu
olchik [2.2K]

Answer:

a) s^2 =30^2 =900

b) \frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}

567.28 \leq \sigma^2 \leq 1690.224

c) 23.818 \leq \sigma \leq 41.112

Step-by-step explanation:

Assuming the following question: Because of staffing decisions, managers of the Gibson-Marimont Hotel are interested in  the variability in the number of rooms occupied per day during a particular season of the  year. A sample of 20 days of operation shows a sample mean of 290 rooms occupied per  day and a sample standard deviation of 30 rooms

Part a

For this case the best point of estimate for the population variance would be:

s^2 =30^2 =900

Part b

The confidence interval for the population variance is given by the following formula:

\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}

The degrees of freedom are given by:

df=n-1=20-1=19

Since the Confidence is 0.90 or 90%, the significance \alpha=0.1 and \alpha/2 =0.05, the critical values for this case are:

\chi^2_{\alpha/2}=30.144

\chi^2_{1- \alpha/2}=10.117

And replacing into the formula for the interval we got:

\frac{(19)(30)^2}{30.144} \leq \sigma^2 \leq \frac{(19)(30)^2}{10.117}

567.28 \leq \sigma^2 \leq 1690.224

Part c

Now we just take square root on both sides of the interval and we got:

23.818 \leq \sigma \leq 41.112

5 0
3 years ago
Select the statement below that correctly describes the relationship between the number of workers and the hours that they work.
oee [108]

Less workers = more hours

OR the answer might be worded as

More workers = less hours

6 0
1 year ago
The table shows the results of a survey of students in two math classes.
qwelly [4]

P(more than 1 hour of TV | 6th period class) is  0.352.

<h3>What is the probability?</h3>

Probability determines the odds that a random event would happen. The odds of the random event happening lie between 0 and 1.

P(more than 1 hour of TV | 6th period class) = number of 6th period class students who watch tv for more than an hour / total number of students surveyed

12 / (12 + 9 + 5 + 8)

12 / 34 = 0.352

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

4 0
1 year ago
You know maths yesterday homework​
dalvyx [7]

Answer:

Explain what you mean please :)?

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Solve for x.<br> Worth 20 pts.
    10·1 answer
  • The amount people who pay for electric service varies quite a bit, but the mean monthly fee is $168 and the standard deviation i
    5·1 answer
  • dani says she is thinking of a secret number. as a clue she says the number is the least whole number that had three different p
    9·1 answer
  • What is the equation of the line in slope intercept form?
    15·1 answer
  • I need help with this proof i am struggling w geometry...
    14·1 answer
  • Alex wants to rent a car. The charge is $18 plus $0.12 per mile.
    5·1 answer
  • 10. Tell whether the sequence is arithmetic. If it is, what is the common difference? (1 point)
    12·1 answer
  • There are 407 students who are enrolled in an introductory Chinese course if there are five boys to every 6 girls how many boys
    12·1 answer
  • I need help on these both (it's 12 year old math) ​
    7·2 answers
  • BRAINLEST!!! Work out 1/2 + 2/9 + 1/6 <br> 25 points! Will mark brainlest if option is avaliable
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!