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
babunello [35]
3 years ago
12

Find a thrid degree polynomial equation with rational coeffcients that has roots -4 and 6 +i

Mathematics
1 answer:
neonofarm [45]3 years ago
4 0
For the coefficients to be rational, any complex roots must occur in conjugate pairs. So if 6+i is a root, then so must be 6-i.

Now such a third degree polynomial might be

(x+4)(x-(6+i))(x-(6-i))=(x+4)(x^2-12x+37)=x^3-8x^2-11x+148

The only variation to this would be multiplying throughout by some non-zero constant. This doesn't change the roots.
You might be interested in
SOLVE FOR X<br><br> plz this is like the 5th time i ask, plz don’t respond with links
sattari [20]

Answer: I used the Pythagorean theorem and got 6.24, but if I was supposed to use another method, just let me know.

The formula is a^2+b^2=c^2

a=5

c=8

b=?

5^2+b^2=8^2

25+b^2=64

b^2=39

b=6.24,

(If it doesn't work, put x=6.24, x=-6.24. It can be both technically, but most teachers ask only for the first one. )

5 0
3 years ago
Model 1.42 = 100% _% = _%
Aleks04 [339]
For the answer to the equation above, are you asking if what is the 1.42% of 100? 
Because the 1.42 of 100% is 1.42

100/x=100/1.42
<span>(100/x)*x=(100/1.42)*x      </span> multiply both sides of the equation by x
<span>100=70.422535211268*x     </span>divide both sides of the equation by (
70.422535211268) to get x
<span>100/70.422535211268=x </span>
<span>1.42=x </span>
<span>x=1.42</span>
I hope my answer helped you. Feel free to ask more questions. If you want some more precise answers to your question, ask the right question to get the right answers. Have a nice day!

3 0
3 years ago
suppose a consumer advocacy group would like to conduct a survey to find the proportion p of consumers who bought the newest gen
Zepler [3.9K]

The size of the sample they should take to estimate p with a 2% margin of error and 90% confidence is n = 1691.

In statistics, the margin of error is just the degree of a significant error in the outcomes of random sample surveys.

The formula of margin error is, E = z√((p-vector)(1 - (p-vector)) ÷ n)

E = 2% = 0.02

Confidence level = 90%

Now, the proportion is not given so adopt nominal (p-vector) = 0.05

The critical value at CL of 90% is 1.645.

Thus, making n the subject,

n = z²(((p-vector) × (1 - (p-vector))) ÷ E²)

n = 1.645²((0.5 × 0.5) ÷ 0.02²)

n = 1691.266

n ≈ 1691

Read more about the margin of error at

brainly.com/question/16141482?referrer=searchResults

#SPJ4

4 0
1 year ago
Which angle below is another name for ZABC?
Liula [17]
Answer is none of these
5 0
2 years ago
What is the equation of the line in slope-intercept form?
kari74 [83]

Answer:

y=400/300x

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Choose among these options the one that results in a graph that shows exponential decay. A. f(x) = 0.6(2)x B. f(x) = 3(0.7)x C.
    5·1 answer
  • Find 2p^2+3p-4 less-2p^2-3p+4
    14·2 answers
  • Sarah has a collection of nickels, dimes, and pennies worth $5.06. She has five times as many nickels as pennies; and she has tw
    10·2 answers
  • PLZZ ANSWER THE QUESTION ​
    9·1 answer
  • How do you find the hypotenuse of a triangle??? HELPPP
    5·1 answer
  • Can anyone offer HELP!
    5·1 answer
  • Sylvios flight is scheduled to travel 1792 miles in 3.5 hours . At what average rate will the plane have to travel to complete t
    5·1 answer
  • Line A passes through the points (1,2) and (3,6). what is the slope of a line parallel to line A.
    10·2 answers
  • What does a quadilateral add up to
    10·1 answer
  • Does y=5x-1 have a intercept of 5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!