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
Alex Ar [27]
3 years ago
12

If -3+i is a root of the polynomial function f(x), which of the following must be a root of f(x)?

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0
Use the conjugate of the 1st solution to find the second. which is -3 - i. or a
pochemuha3 years ago
8 0
When dealing with imaginary numbers as roots of a polynomial, you will see that they always occur in conjugates. So the other root that goes with this one is -3 - i.  This will always be the case.
You might be interested in
Solve for x: (x*x*x) - 3 = 8x
Mekhanik [1.2K]

Answer:

Step-by-step explanation:

(3 * 3 * 3 ) = 27 - 3 = 24

8 * 3 = 24

x = 3

5 0
3 years ago
A rectangle has sides measuring (4x + 5) units and (3x + 10) units.
Artist 52 [7]

Answer:

PART A :

AREA OF RECTANGLE = LENGTH × BREADTH

A = (4x + 5) (3x + 10)

A = 12(x^2) + 55x + 50

PART B: The above is a trinomial with the second degree. Trinomial because it has 3 terms and second degree because the variable(x) is squared.

PART C : Closure under addition and multiplication. Look at the signs.

6 0
2 years ago
4b - 2 =6<br> Show step by step how to solve and check (giving 10 points)
BabaBlast [244]

Answer:

b=2

Step-by-step explanation:

1.1     Pull out like factors :

  4b - 8  =   4 • (b - 2)

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    4   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

2.2      Solve  :    b-2 = 0

Add  2  to both sides of the equation :

                     b = 2

One solution was found :

                  b = 2

8 0
2 years ago
Read 2 more answers
A stuffed animal that originally cost $120 is on sale for $80. By what percent has the original cost been reduced
Otrada [13]

Answer:

The cost has been reduced by approximately 33%.

Step-by-step explanation:

1% of 120 is 1.2.

80 divided by 1.2 is 66.66666666...

Meaning that $80 is about 66% of the original cost. Therefore, about 33% of the cost was removed.

Hope this helps

5 0
2 years ago
Greta has 12 pens and 20 pencils in her desk drawer. What is the ratio of pens to pencils in her desk?
emmainna [20.7K]

Answer:

every 3 pends there is 5 pencils

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • The length of the long leg of a right triangle is 16 inches more than four times of the shorter leg. The length of the hypotenus
    5·1 answer
  • How would you solve 3x^2-12=0?
    9·1 answer
  • The volume of clay used to build a cylindrical pillar with a height of 9 centimeters is 324π cubic centimeters. What is the area
    15·2 answers
  • Which of the following inequalities is equivalent to 5 &gt; x?
    10·1 answer
  • Target sells 24 bottles of water for $3 and thirty six bottles of water for $4 which is a better buy
    15·2 answers
  • What is 96% of 63 <img src="https://tex.z-dn.net/?f=96%25%20of%2063" id="TexFormula1" title="96% of 63" alt="96% of 63" align="a
    12·2 answers
  • What are the vertex and x-intercepts of the graph of the function below?
    8·1 answer
  • Ground of the following nearest tens and Place a 7639. b_4325671​
    10·1 answer
  • 20 points 3 math questions<br><br> please help with these math questions
    10·2 answers
  • If there 3 feet in a yard and a football field is 100 yards long how long is the football field in feet
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!