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
zaharov [31]
2 years ago
7

If −1 is a zero of the polynomial p(x)=ax^3−x^2+x+4, find the value of a.

Mathematics
1 answer:
vitfil [10]2 years ago
8 0

Answer:

a = 2

Step-by-step explanation:

given x = - 1 is a zero then f(- 1) = 0 , that is

a(- 1)³ - (- 1)² - 1 + 4 = 0

- a - 1 - 1 + 4 = 0

- a + 2 = 0 ( subtract 2 from both sides )

- a = - 2 ( multiply both sides by - 1 )

a = 2

You might be interested in
Solve for v pls thanks
Ksivusya [100]

Answer:

v = 18

Step-by-step explanation:

8/3v = 48

were going to have to get 3 on the other side, so were going to cancel it out and multipliy it because it is a fraction

now we would have 8v = 48*3

48*3=144

now the equation looks like this 8v = 144

to isolate v we can divide 8 on both sides

which brings us to v = 18

High Hopes^^

Barry-

7 0
3 years ago
If f(x)=x-6 and g(x)=x^1/2(x+3) what is f(x) times g(x
dimaraw [331]
This  is (x - 6)*x^1/2(x + 3)

= x^1/2 (x^2 - 3x - 18)

= x^(5/2) - 3x^(3/2) - 18x^(1/2)
7 0
3 years ago
Read 2 more answers
For the given table of values for a polynomial function, where must the zeros of the function lie?
Jet001 [13]

Answer:

A. Between 3.0 and 3.5 and between 4.0 and 4.5

Step-by-step explanation:

The zeroes of a function occur whenever a value of x returns zero. To predict where the zeroes lie, determine the interval(s) where the function crosses the x-axis. This occurs when either f(x) goes from a negative value to a positive value or vice versa.

From x=3.0 and x=3.5, the y-values go from 4.0 (positive) to -0.2 (negative), respectively. Therefore, there must be a zero in this interval.

From x=4.0 and x=4.5, the y-values go from -0.8 (negative) to 0.1 (positive), respectively. Therefore, there must also be a zero in this interval.

Thus, the zeros of this function occur between 3.0 and 3.5 and between 4.0 and 4.5, leading to answer choice A.

7 0
3 years ago
Which ordered pairs are solutions to the system? Check all of the boxes that apply.
77julia77 [94]

Answer:

the answer is the 3rd & 5th one for anyone doing this question ; )

Step-by-step explanation:

I just did this question

It's right i just checked

7 0
3 years ago
Read 2 more answers
Answers because I need help
kramer

Answer:

f(x)

Step-by-step explanation:

the function f(x) crosses the y-axis higher than either of the other functions, therefore it has the largest y-intercept

6 0
3 years ago
Read 2 more answers
Other questions:
  • Given: ∠V ≅ ∠Y, bisects ∠VWY. Prove: ∆VWZ ≅ ∆YWZ Look at the figure. Which postulate or theorem proves the triangles are congrue
    13·1 answer
  • Let f(x) = 4x – 1, h(x) = -x-1.<br><br> Find (f o h)(6)<br><br> (foh)(6) =
    9·1 answer
  • Mr.collins wrote a number between 7000 and 8000. there were more hundreds than tens. there were more ones than hundreds. what co
    5·1 answer
  • Give the coordinates of the unknown vertex of JKLM and graph
    13·1 answer
  • Two sides of a right triangle or 8 and 12 inches. Find the missing side if these are the lengths of the legs
    15·1 answer
  • If h(x) =-2x-10 find h(-4)
    10·2 answers
  • Jk =5x+17,KL = x -1,JL=7x-9 find a range of possible values for x
    7·1 answer
  • Someone please help me I know you see this:)
    10·2 answers
  • 3x2 + 5x + 7 = 0.<br> what's the discriminant
    12·1 answer
  • Someone help<br> What is 3.5=12s-55
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!