Use Synthetic substitution to find f(3) and f(-4) for f(x)=x^4-8x-11
f(3)=
f(-4)=

please give working for better understanding ​

Answers

Answer 1

Answer:

46 and 277

Step-by-step explanation:

Given

f(x) = [tex]x^{4}[/tex] - 8x - 11 ← substitute x = 3, x = - 4 into f(x)

f(3) = [tex]3^{4}[/tex] - 8(3) - 11 = 81 - 24 - 11 = 81 - 35 = 46

f(- 4) = [tex](-4)^{4}[/tex] - 8(- 4) - 11 = 256 + 32 - 11 = 288 - 11 = 277


Related Questions

Benjamin rode tghe train for 45 minutes. Then it took him another 30 minutes to walk to his friend's house. How many hours did he spend riding and walking to his friend's house?

Answers

Answer:

1.25 hours

Step-by-step explanation:

Benjamin rode tghe train for 45 minutes. Then it took him another 30 minutes to walk to his friend's house. How many hours did he spend riding and walking to his friend's house?

The number of hours he spent riding and walking to his friends house is calculated as:

45 minutes + 30 minutes

= 75 minutes

Converting this to hours

60 minutes = 1 hour

75 minutes = x

Cross Multiply

60 × x = 75 × 1

x = 75/60

x = 1.25 hours

John scored 17 out of 30 in the Entrepreneurship test calculate his marks in percentage give your answer to one decimal place​

Answers

Answer:

well, one john isnt that smart . he scored a 57% (0.5666....repeating)

Step-by-step explanation:

17 divided by

30

Help. Mean or median

Answers

Answer:

the answer is C she wants to take both good and bad games into account

Find the length of the rectangle.

Answers

Answer:

8

Step-by-step explanation:

area- lenght times width

divided to find length

56/7 = 8

1) (x - 2)/(x - 3) + (3x - 11)/(x - 4) = (4x + 13)/(x + 1)​

Answers

Step-by-step explanation:

or,(x-2)(x-4)+(3x-11)(x-3)/(x-3)(x-4)=(4x+13)/(x+1)

or,x^2-4x-2x+8+3x^2-9x-11x+33/x^2-4x-3x+12=(4x+13)/(x+1)

or,4x^2-4x-2x-9x-11x+8+33/x^2-7x+12=(4x+13)/(x+1)

or,4x^2-26x+41/x^2-7x+12=(4x+13)/(x+1)

or, (x+1)(4x^2-26x+41)=(4x+13)(x^2-7x+12)

or,4x^3-26x^2+41x+4x^2-26x+41=4x^3-28x^2+48x+13x^2-91x+156

or,-26x^2+4x^2+28x^2-13x^2+41x-26x-48x+91x=156-41

or,-7x^2+58x=115

or,-7x^2+58x-115=0

or,-(7x^2-58x+115)=0

or,7x^2-58x+115=0

or,7x^2-(35+23)x+115=0

or,7x^2-35x-23x+115=0

or,7x (x-5)-23 (x-5)=0

or, (x-5)(7x-23)=0

Either, Or,

(x-5)=0 (7x-23)=0

or,x=0+5 or,7x=23

:x=5 :x=23/7

Hence,x=5 or 23/7

how many times is 3 in 43.999 than the value of the digit 3 in 42.103

Answers

Answer:

1. 14.666 ¯ over the 3

2. 14.034 ¯ over the 3

Step-by-step explanation:

72 paper clips to 63 paper clips

Answers

Answer:

The percent change for this question is -12.5%

Step-by-step explanation:

I don't really understand what you want me to find so Im going to find percent change and difference. The difference is -9 and percent change is -12.5

I WILL GIVE BRAINLEST

Jenny is a full-time college student at the local university. She is debating whether to purchase renter's insurance or not. In at least one paragraph, give Jenny 3 reasons why purchasing renter's insurance is important. Also, give your recommendation on how much renter's insurance she should purchase and why.

I WILL GIVE BRAINLYEST

Answers

Jenny is a full-time college student at the local university. She is debating whether to purchase renter’s insurance or not. In at least one paragraph, give Jenny 3 reasons why purchasing renter’s insurance is important. Also, give your recommendation on how much renter’s insurance she should purchase and why.a. Answers will vary. Jenny should purchase at least$11,050 worth of coverage to ensure that all of her belongings are covered.

i HOPE IT'S HELP

The radius of a cylindrical water tank is 6.5 ft, and its height is 11 ft. What is the volume of the tank?

Answers

Answer:

Step By Step explanation:

write an equation of the line that passes through the given points.
(-1,3) and (3-5)
(slope intercept form)

Answers

Answer:

y=-2x+1

Step-by-step explanation:

to find the slope use the formula (y2-y1)/(x2-x1)

-5-3= -8

3-(-1) = 4

-8/4 = -2

help plz asap i reward brainliest
im being timed!!!!

Answers

It should be 4 I think
I looked it up on desmos, I am positive that this is the correct answer

A toy rocket is launched from a platform that is 48 feet high. The rocket’s height above the ground is modeled by h = -16t 2+ 32t + 48. a. Find the maximum height of the rocket.

Answers

Answer:

The maximum height of the rocket is 64 ft.

Step-by-step explanation:

The -t^2 term tells us that the graph of this function is a parabola that opens down.  The x-coordinate of the axis of symmetry is

        -b

x = -----------

       2a

which here is:

        -32

x = ------------ = 1

       2(-16)

The value of this function at t = 1 is

h(1) = -16(1)^2 + 32(1) + 48, or 64 ft

The maximum height of the rocket is 64 ft.

Fine the circumference... need answer quick

Answers

Answer:

C =37.7m

Step-by-step explanation:

The circumference is

C  = pi *d

Using the pi button for pi

C = 37.69911184

C =37.7

PLEASE HELP....
Which of the following could be the side lengths of a triangle?

A.
15, 16, 33

B.
14, 16, 34

C.
12,15, 30

D.
17, 18, 32

Answers

Answer:

i think B

Step-by-step explanation:

i think B

Answer:

D is one (in my opinion)

Step-by-step explanation:

Only D works, because the two least (smallest) side lengths must exceed the greatest side length in order to actually construct a

The angle measurements in the diagram are represented by the following expressions.

Answers

Answer:

x = 20 , ∠ A = 125°

Step-by-step explanation:

∠ A and ∠ B are alternate angles and are congruent, then

6x + 5 = 4x + 45 ( subtract 4x from both sides )

2x + 5 = 45 ( subtract 5 from both sides )

2x = 40 ( divide both sides by 2 )

x = 20

Then

∠ A = 6x + 5 = 6(20) + 5 = 120 + 5 = 125°

what is the zero of (-8,-1) and (4,2)​

Answers

Answer:

It’s 4.2

Step-by-step explanation:

Verify that TUV ~ XYZ. Find the scale factor of TUV to XYZ.

Answers

Answer: 3

Step-by-step explanation: math

Expand.
Your answer should be a polynomial in standard form.
2x^2(9x^2 – 16)

Answers

18x^4-32x^2 in standard form I believe.

The Australian government increased the number of marine sanctuaries. The protected area
now covers 1.2 million square miles of ocean. Express 1.2 million in scientific notation.
I NEED HELP ASAP!!!!

Answers

Answer:

c

Step-by-step explanation:

10x10x10x10x10x10=1000000x1.2=1200000

Seven less than the product of 24 and a number

Answers

24x-7
hope this helps
24x - 7 so you would find x

One study, based on responses from 1,017 randomly selected teenagers, concluded that 39% of teenagers cite grades as their greatest source of pressure. use a 0.05 significance level to test the claim that fewer than half of all teenagers in the population feel grades are their greatest source of pressure

Answers

Answer:

The hypothesis formulae will be

H0 : p = 0.5

Ha : p < 0.5

we will reject H0.

Step-by-step explanation:

Number of responses ( n ) = 1017

percentage( p ) = 39% = 0.39

significance level ( ∝ ) = 0.05

P0 = 50% = 0.5

Test the claim that fewer than half of all teenagers feel the pressure

The hypothesis formulae will be

H0 : p = 0.5

Ha : p < 0.5

Perform the test statistic

Test statistic ( Z ) = -6.957

P-value < 0.05   we will reject H0.  

What is the range of the relation?
(-3,-2,0,2)
(-3,3)
(-4,-2,1,2)
(-4,-3,-2,1,0,2)

Answers

Answer:

jn8huuojgui

Step-by-s

pls help me. i'm stuck and don't remember how to do it. will mark brainliest if correct!!!

3/4 x = (4/3)²
(negative 2)

Answers

x=2.37

Step-by-step explanation:

(3/4)x=(16/9)

36×3/4x=36×16/9

27x=64

x=2.37

Answer:

64/27ths  

Step-by-step explanation:

Hey! Can someone help me?

Answers

Answer:

Option 3

Step-by-step explanation:

The sentence provides the reasoning for a possible explanation.

Now, let's look at all the possible answers:

1. This doesn't show us that scientists cannot agree. A sentence like that could be that many scientists have analyzed the region, but they did not find anything.

2. This does not tell us that this region is interesting. A sentence like that would be saying that the cause of the lightning is unknown.

3. This is correct- it provides evidence for a main theory.

4. This does not explain why people name the lightning a certain way. A sentence like that could be a local fable.

Two lines, M and N, are represented by the following equations:

Line M: y = x + 3
Line N: y = −2x + 6

Which of the following options shows the solution to the system of equations and explains why? Please do it quickly

Group of answer choices

(1, 4), because the point does not lie on any axis

(1, 4), because one of the lines passes through this point

(1, 4), because both lines pass through this point

(1, 4), because the point lies between the two axes

Answers

Xjxjxxjxjxjxjxhxhxhxhxjcxjcjdlsu

Answer:

The answer is (1,4) because both lines pass through this point.

Step-by-step explanation:

To find a solution to a system of equations, both lines have to pass through the same point. If both lines intercept at the same point, that means that point is the solution to the system of equations.

Please help me with this question ASAP

Answers

Answer:

Volume: 160

LA: 112

SA: 192

Step-by-step explanation:

The equations can be found in previous answers.

Pls help help help help help help help​

Answers

Answer:

y=-2x+5

Step-by-step explanation:

slope is going down 2 over 1

y-int is 5

Write the standard form of the line that passes through the given points. Include your work in your final answer. Type your answer in the box provided to submit your solution. ( 4 , 7 ) and ( 0 , 7 )

Answers

9514 1404 393

Answer:

  y = 7

Step-by-step explanation:

The slope is ...

  m = (7 -7)/(0 -4) = 0

The y-intercept is the point (0, 7), so the slope-intercept equation is ...

  y = mx +b

  y = 0·x +7

Simplifying this puts it in standard form:

  y = 7

A person invested $140 in an account growing at a rate allowing the money to double
every 15 years. How long, to the nearest tenth of a year would it take for the value of
the account to reach $280?

Answers

Answer: 15 years

Step-by-step explanation:

$140 doubled is $280 which happens every 15 years

PLEASE HELP! QUICKLY!!!

I’m not sure how to go about solving this. Could somebody help?

Answers

Answer:

2.83

Step-by-step explanation:

Can I have Brainliest?

Answer:

If you see the little square on the side maybe try to measure it and keep putting it on top and see how many of then till the top. (if you knwo what i mean )

Step-by-step explanation:

I am SUPER sorry if you get it wrong :(

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