Finds real root off(x)=x3 +x2 +x+7=0

Answers

Answer 1

9514 1404 393

Answer:

  x ≈ −2.10487278573

Step-by-step explanation:

I find a graphing calculator to be a very useful tool for the purpose. It shows the only real root is irrational and gives an approximation as x=-2.105.

The calculator also provides the means to perform Newton's method iteration easily to refine the value of the root to full calculator precision.

__

The Newton's method iterator for finding the next iteration of the root (x') is ...

  x' = x - f(x)/f'(x)

Starting with the approximation shown on the graph, it only takes two iterations to get the root to the full precision of the calculator.

Finds Real Root Off(x)=x3 +x2 +x+7=0

Related Questions

if (x+30) and (3x+10)are co interior angle.Find the value of x


Answers

Answer:19

Step-by-step explanation:

3x3=9 then add by 10 giving u the sum of 19

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Answer:

x = 35

Step-by-step explanation:

Co interior angle sum to 180° , so

x + 30 + 3x + 10 = 180 , that is

4x + 40 = 180 ( subtract 40 from both sides )

4x = 140 ( divide both sides by 4 )

x = 35

What is the answer for number 74.

Answers

Answer:

g

Step-by-step explanation:

I don’t know how to do this pls help me with this!!

Answers

Answer: 1st bar: 1=100%

2nd bar= 1/2=50%

3rd bar= 1/3= 33.3%

4th= 1/4= 25%

5th= 1/5= 20%

Last bar= 1/10= 10%

Step-by-step explanation:

Which of the following is true, according to the graph?

There is a much larger preference for science among those who prefer R&B.
There is a much larger preference for English among those who prefer rock.
There is a much smaller preference for math among those who prefer country.
The percentages for class preference are relatively the same among the different music groups.

Answers

Answer:

a one is right answer

Step-by-step explanation:

h.j.j.k kaoa0

The greatest 6 digit even numbers with 4 in the ten thousand place and all digits different

Answers

Answer:

948,762

Step-by-step explanation:

The greatest six digit number would have to start with 9. It is given that the four is in the ten thousand place. Since no number can be repeated. I put the next largest number to 9 in the thousands place which is 8. I then put 7 then 6.  Since the number has to be even I put 2 since 8, 6 and 4 were already used.

The greatest 6 digit even numbers with 4 in the ten thousand place and all digits different is 948,762.

What are even numbers?

An even number is an integer that can be divided by two and remain an integer or has no remainder.

Now it is given that,

greatest 6 digit even numbers with 4 in the ten thousand place and all digits different

So, the greatest will be starting from 9

Digit at the ten thousand place is fix, 4

Digit at the thousand place is 8

Digit at the hundred place is 7

Digit at the ten place is 6

Since, it is an even number then it must be divisible by 2.

So, last digit at ones is 2

Thus we get, 948,762

hence, the greatest 6 digit even numbers with 4 in the ten thousand place and all digits different is 948,762.

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I. LUI
Solve the equation by factoring. (Enter your
ans
4x^2 – 8x – 5 = 0

Answers

Answer:

hope it's helps you.......

Graph the line with slope -3/4 passing through the point (2,2)

Answers

Step-by-step explanation:

the answer is in the graph above

4(1/2+3/4)+(-2) equals what?

Answers

Answer:

3

Step-by-step explanation:

i think

Answer:

[tex]4( \frac{1}{2} + \frac{3}{4} ) - 2 \\ = 4( \frac{2 + 3}{4} ) - 2 \\ = 4( \frac{5}{4}) - 2 \\ = 5 - 2 \\ = 3[/tex]

Order of operations 8x18/4+15

Answers

Answer:

8×18=144

4±15=19

144÷19

7.579 answer

f(2) if f(x) = 3x + 5. f(2)?

Answers

Answer:

f(2) = 11

Step-by-step explanation:

Plug 2 in for x

3(2) + 5

6 + 5

= 11

Gross income is:

A. the amount of pay after tax and benefit deductions.
B. the amount of pay after tax but before benefit deductions.
C. the total amount of earned salary or wages.
D. the total amount an employer withholds for taxes.​

Answers

Gross income is: The total amount of earned salary or wages. Option C is the correct answer.

Gross income refers to the total amount of money earned by an individual before any deductions or taxes are taken out. It represents the complete earnings from employment or other sources of income before any adjustments or deductions are made.

Gross income includes the full amount of salary or wages earned by an individual, as well as any additional income such as bonuses, commissions, or tips.

Option A is incorrect because gross income is the total amount earned before tax and benefit deductions are applied.

Option B is incorrect because gross income is not after tax, but rather before any tax deductions.

Option D is incorrect because gross income does not specifically refer to the amount withheld for taxes, but rather the total amount earned before any deductions.

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Please, someone, help

Answers

Answer:

I will help

Step-by-step explanation:

What is the value of 3-(-2) ?

Answers

Answer:

3  + 2 = 5

                          Thank You

Renaldo can rollerblade 9.7 miles per hour. at this rate, how far will he rollerblade in 0.75 hours?​

Answers

Answer:  1.125 miles

Step-by-step explanation:

If I'm 4years and my brother is half of my age now I'm 44 how old is he ?

Answers

Answer:

22

Step-by-step explanation:

If you are 4 and he is half your age that would make him 2 meaning that he is 2 years younger than you so if you are now 44 then he would be 2 years younger than you so he would 42

Can you guys plz help me

Answers

Answer:

The segment CD is a diameter . It is 15 cm long.

a system of equations is given below in terms of the scalar parameters a and b.

ax + 2y+ 4z = b

2x +y+3z= a+1

5x-2y+ (a+1)z= 3

(1) Show that if a = -5 or a=2, the system does not have a unique solution.​

Answers

A system of equations only has a unique solution if all the equations are linearly independent (this means that we have two or more equations representing the same curve).

Here we have the system:

a*x + 2*y + 4*z = b

2*x + y + 3*z = a + 1

5*x - 2*y + (a + 1)*z = 3

Now we want to show that if a = -5 or a = 2, then the system does not have a unique solution.

To see this, we can just replace a by these values and see that the equations are not linearly independent.

for a = 2 we get:

2*x + 2*y + 4*z = b

2*x + y + 3*z = 2 + 1

5*x - 2*y + (2 + 1)*z = 3

Simplifying this:

2*x + 2*y + 4*z = b

2*x + y + 3*z = 3

5*x - 2*y + 3*z = 3

From the second and third equation we can write:

2*x + y + 3*z = 3 = 5*x - 2*y + 3*z

2*x + y + 3*z = 5*x - 2*y + 3*z

2*x + y = 5*x - 2*y

3*y = 3*x

y = x

now that we know this, we can rewrite the equations as:

4*(x + z) = b

3*(x + z) = 3

Now we can take the quotient of the two equations to get:

(4*(x + z))/3*(x + z) = (4/3) = b/3

b = 4

Then the equations become:

4*(x + z) = 4

3*(x + z) = 3

Here we can divide te above one by 4 and the below one by 3 to get:

(x + z) = 1

(x + z) = 1

So both equations represent the same line, thus, the system does not have a unique solution.

Now for a = -5:

-5*x + 2*y + 4*z = b

2*x + y + 3*z = -5 + 1

5*x - 2*y + (-5 + 1)*z = 3

Simplify it:

-5*x + 2*y + 4*z = b

2*x + y + 3*z = -4

5*x - 2*y  - 4*z = 3

Now we can rewrite the first equation as:

-5*x +2*y - b = -4*z

and the third one as:

-4*z = 3 - 5*x + 2*y

Then we can write:

-5*x +2*y - b = -4*z = 3 - 5*x + 2*y

-5*x +2*y - b = 3 - 5*x + 2*y

Now we can remove the -5*x in both sides to get:

+2*y - b = 3 + 2*y

Now we can remove the 2*y in both sides to get:

-b = 3

b = -3

Replacing this in our system we get:

-5*x + 2*y + 4*z = -3

2*x + y + 3*z = -4

5*x - 2*y  -4*z = 3

Now we can multiply the first equation by -1:

-1*(-5*x + 2*y + 4*z)= -1*(-3)

5*x - 2*y - 4*z = 3

This is the same as the third equation, so here we can see that the first and third equations represent the same line, thus, the system of equations does not have a unique solution.

If you want to learn more, you can read:

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brainiest to whoever rightt.

Answers

Answer:

Perimeter of a square

Step-by-step explanation:

The formula for finding out the perimeter of a square is P = 4s

Evaluate each using the values given.

m-((-3) + p)-q; use m= 10, p=-6, and q = 10

Answers

Answer:

9

Step-by-step explanation:

10-((-3) + -6)-10

10-(-9)-10

10+9-10

9

Woolworths had a going out of business sale. The price of a telephone before the sale was $39.98. What was the price of the telephone after a 30% discount? If the sale price of the same telephone had been $23.99, what would the percentage discount have been?

Answers

to find the price after the discount the equation would be 39..98x.30which would equal 11.99. subtract that from the price before the discount and you get $27.99. thats your first answer. to find the second answer you would do 23.99 divided by 11.99 (the diacount from the first equation) to get the discount rate of 2% so your final answers are $27.99 and 2%

Solve each equation for the
variable.
n + 3 = 8







4 + w = -8

Answers

1.) answer: 5
Steps subtract 3 from both sides 8-3 is 5 so x is 5

2.) answer: -12
Because the 4 is positive you subtract it on the other side to cancel it out and -4 +-8 is -12 so x is -12

$24000 was deposited in an account. If rate of interest is 15% p.a. compounded annually, then calculate the amount after 2 years.

(a) 5060 (b) 5180 (c) 5290 (d) 5350.

Answers

Answer:

Principal=P=24,000

Rate of interest=r=15%

Time=n=2

3

1

years

Here first we take n=2years

A=P(1+

100

r

)

n

where A=Amount and n=number of years

A=24000(1+

100

15

)

2

=24000×

100

115

×

100

115

=Rs.31,740‬

The amount after 2 years is Rs31,740‬

Now principal=Rs.31,740‬

Simple interest for last

3

1

year is

100

PRT

=31,740‬×

100

15

×

3

1

= Rs.1,587‬

∴ Amount after 2

3

1

year= Rs.31740+1587= Rs.33,327

C.I =A−P

∴C.I=33,327−24,000=Rs.9,327‬

Answer:

solution :

principal (p)=24000

rate of interest (r)=15%

time(t)= 2 years

simple interest (S.I)=?

amount (a)=?

now,

S.I=PRT

100

=24000*15*2

100

=240*15*2

=7200

Again,

a=P+S.I

=24000+7200

=31200#

Point B is between points A and C. AB = 2x - 3, BC = 7x - 10, and AC = 32.
What is the value of x?

Answers

2x-3 + 7x - 10 = 32
9x -13 = 32
9x = 45
X=5

What is 50 divided by 8?

Answers

Answer:

6.25 or 6 2/8 or 6 R2

Step-by-step explanation:

A.It has reflectional symmetry with one line of symmetry.

B.It has point symmetry.

C.It has no reflectional symmetry.

D.It has rotational symmetry with an angle of rotation of 180°.

Answers

Answer:

Step-by-step explanation:

( A ). It has reflectional symmetry with one line of symmetry.

prince covers 1200 meter distance in 10 minutes . calculate his velocity ​

Answers

The answer is two meters per second

Answer: 120 m/min or 2 m/s

Concept:

Here, we need to know how to calculate velocity.

Velocity = ΔD / ΔT

The SI unit of velocity is m/s

Solve:

Given information

Distance = 1200 m

Time = 10 min

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 10

Velocity = 120 m/min

Extra:

**Disclaimer** Ignore this part if it is irrelevant to what you are learning.

If the question needs an answer with SI unit, then please see below:

Given information

Distance = 1200 m

Time = 10 min = 10 × 60 = 600 sec

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 600

Velocity = 2 m/s

Hope this helps!! :)

Please let me know if you have any questions

need help......................................... I DO ANYTHING

Answers

Step-by-step explanation:

Additive inverse are numbers with the same number but different signs. For example, 1 and -1 are additive inverse.

An additive inverse and it original number add to zero.

For example,

[tex]1 + ( - 1) = 0[/tex]

Using this info, w is -0.8

0.8 and -0.8 are equidistant from 0.

-0.8 is 2 mark to the right of -1.

So this means that 0.8 is 2 mark to left of 1.

Which number produces a rational number when added to 1/2?
A. 4.35889894...
B. 0.314
C. 12
D. TT

Answers

Answer:

B and C

Step-by-step explanation:

A is a non terminating number which means it isn't rational. B and C are both rational and adding 1/2 to them won't change that, since they are terminating numbers. D is not a number.

Answer:

12+1/2 (0.5 as a decimal)

Step-by-step explanation:

π +0.5 will give an irrational number.

0.314 is rational

12 is a counting number.

And 4.35889894... is an irrational number.

An irrational number plus a rational one equals an irrational number.

Hope it helps! Please mark Brainliest! :-)

Simplify 21v ^-6 divided by (-7v^-6)

Answers

The answer is -3. I just did it on a calculator

3) You roll a number cube what's the probability of
rolling a number higher than 4 and then a 2?

Answers

Answer:

1/18

Step-by-step explanation:

Probability of getting a number higher than 4=1/3

Probability of getting 2=1/6

Probability of rolling a number higher than 4 and then a 2=(1/3)*(1/6)=1/18

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