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
Morgarella [4.7K]
3 years ago
7

Given f(x)= 2x^3+kx-1, and x+1 is a factor of f(x), then what is the value of k?

Mathematics
2 answers:
VMariaS [17]3 years ago
5 0

Answer:

put x=-1, and the rest will be easy

4vir4ik [10]3 years ago
5 0

If x + 1 divides f(x), this means x = -1 is a root of f(x), i.e. f(-1) = 0. Plugging in x = -1 gives

f(-1) = 2 (-1)³ + k (-1) - 1 = -3 - k = 0

Solve for k; you end up with k = -3.

You might be interested in
Which steps will generate an expression equivalent to 17(x+5)?<br> MARK BRAINLIEST
bezimeni [28]

Answer:

multiply 17x5=85,85+5=90 so aswer is 90

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A video game maker claims that number of glitches in code for their
svet-max [94.6K]

Answer:

The major condition that needs to be satisfied before a t-test is performed that the question satisfies easily is the use of random sampling to obtain sample data.

Step-by-step explanation:

The major conditions necessary to conduct a t-test about a mean include;

- The sample extracted from the population must be extracted using random sampling. That is, the sample must be a random sample of the population.

- The sampling distribution must be normal or approximately normal. This is achievable when the population distribution is normal or approximately normal.

- Each observation in the sample data must have an independent outcome. That is, the outcome/result of each sub-data mustn't depend on one another.

Of the three conditions that need to be satisfied before the conduction of a t-test, the first condition about using a random sampling technique is evidently satisfied.

It is stated in the question that 'A private investigator hired by a competitor takes a random sample of 47 games and tries to determine if there are more than 7 glitches per game'.

Hope this Helps!!!

5 0
3 years ago
I need to answer number one I will give as many points as I can for the question and I will mark brainiest
Grace [21]

Answer:

  • diagram is below
  • 6, 11, 16, 21
  • s[n] = s[n-1] +5
  • 26, 31, 36

Step-by-step explanation:

a) See below for the next diagram in sequence.

__

b) The numbers of straws in each diagram are ...

  6, 11, 16, 21, ...

__

c) Each term is 5 more than the previous one, so the recursive rule for the number of straws is ...

  s[1] = 6

  s[n] = s[n-1] +5

__

d) The next three terms of the sequence are ...

  ..., 26, 31, 36, ...

6 0
3 years ago
Hello I need help the picture is down below
Setler [38]

Bloody nose again check lol

4 0
2 years ago
Read 2 more answers
3) WILL MARK BRAINLIEST + 10 POINTS!!!!!! :)
Charra [1.4K]
 
This is really a long way to go to make something complicated
out of something simple.  The last choice does the job.

cos(180)  =  -1
sin(180)  =   0

So       4 [cos(180) + i sin(180) ]

       =   4 [ -1      +  i (0) ]

       =     -4     yay!
5 0
3 years ago
Other questions:
  • 2n-5=11<br> Two step equation
    9·1 answer
  • There are 4 brown shoes and 10 black shoes on the floor . Your puppy carries away two shoes on at a time . What is the probabili
    8·1 answer
  • Its at the tip of my mind, but I just can’t solve it.
    10·1 answer
  • Please help me with this geometry question and show work
    13·1 answer
  • What is the area of the figure?<br><br> A. 52 cm2<br> B. 52 cm<br> O C. 130 cm<br> O D. 130 cm2
    14·2 answers
  • A control variable is:
    10·1 answer
  • Eldrick manages wildlife samples for Ducks Unlimited. Two samples of duck populations at a migratory site are shown
    13·1 answer
  • I need this ASAP!!!!!!!! if 0
    10·2 answers
  • Please please help me please help now please please help and show your steps help NOW PLEASE please help
    15·1 answer
  • Use the distance formula to find the distance, to the nearest tenth, from S(6, −2) to V(−4, 3). −5.0 units 3.1 units 11.2 units
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!