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
kow [346]
3 years ago
15

How many x intercept appear on the graph of the polynomial function F(x)=x4-5x2

Mathematics
1 answer:
4vir4ik [10]3 years ago
3 0
f(x)=x^4-5x^2\\\\x^4-5x^2=0\\\\x^2(x^2-5)=0\\\\x^2[x^2-(\sqrt5)^2]=0\\\\x^2(x-\sqrt5)(x+\sqrt5)=0\iff x=0\ \vee\ x=\sqrt5\ \vee\ x=-\sqrt5

Answer: 3 x-intercepts.

You might be interested in
Write an explicit formula for the sequence -13,-6,1,8
vladimir2022 [97]

Answer:

\large\boxed{a_n=7n-20}

Step-by-step explanation:

It's an arithmetic sequence.

-6-(-13)=-6+13=7\\1-(-6)=1+6=7\\8-1=7

The difference is constant.

The explicit formula of an arihmetic sequence:

a_n=a_1+(n-1)d

Substitute:

a_1=-13,\ d=7

a_n=-13+(n-1)(7)                <em>use distributive property</em>

a_n=-13+7n-7\\\\a_n=7n+(-13-7)\\\\a_n=7n-20

4 0
3 years ago
-x - y when x = -12 and y =2
kap26 [50]

Answer:

10

Step-by-step explanation:

Negative times a negative is a positive.

so 12-2=10

5 0
3 years ago
Read 2 more answers
What is the sum of the EXTERIOR angles of an octagon?
navik [9.2K]

Answer:

A rule of polygons is that the sum of the exterior angles always equals 360 degrees. Since it is a regular octagon, so each of the interior angles of octagon are equal. ((n-2)*180)/n where n is the number of sides of the polygon.for example in case n=8 for an octagon, so we get:

((8-2)*180)/8 => (6*180)/8 => 1080/8 = 135 degrees. This means that each interior angle of the regular octagon is equal to 135 degrees.  

Each exterior angle is the supplementary angle to the interior angle at the vertex of the polygon, so in this case each exterior angle is equal to 45 degrees. (180 - 135 = 45). Remember that supplementary angles add up to 180 degrees.  

And since there are 8 exterior angles, we multiply 45 degrees * 8 and we get 360 degrees.

This technique works for every polygon, as long as you are asked to take one exterior angle per vertex.

8 0
3 years ago
Read 2 more answers
What is the value of x when the richter scale rating scale is 8.4?
Vsevolod [243]

The value of x when the richter scale rating scale is 8.4 is 251188643.151

<h3>What is a richter scale?</h3>

A richter scale is a numerical scale that is used for expressing the magnitude of an earthquake in a geographical area

<h3>How the richter scale works?</h3>

The richter scale takes the amplitude of the earthquake's largest seismic as an input and calculate (and display) the magnitude of an earthquake in the geographical area using a logarithmic function

<h3>How to determine the value of x?</h3>

The formula of a richter scale is expressed as:

log(x) = n

Where n represents the scale rating of the scale

In this case, n = 8.4.

So, we have:

log(x) = 8.4

Express as an exponent

x = 10^8.4

Evaluate the exponent

x = 251188643.151

Hence, the value of x when the richter scale rating scale is 8.4 is 251188643.151

Read more about richter scale rating at

brainly.com/question/19799610

#SPJ1

7 0
1 year ago
Product A requires 5 machine hours per unit to be produced, Product B requires only 3 machine hours per unit, and the company's
Lesechka [4]

Answer:

  Produce only Product B.

Step-by-step explanation:

The contribution margin per machine hour for product A is ...

  ($16 -$6)/(5 hour) = $2 per hour

The contribution margin per machine hour for product B is ...

  ($12 -$5)/(3 hour) ≈ $2.33 per hour

The company should produce the maximum possible number of the product that contributes the most per machine hour: Product B.

5 0
3 years ago
Other questions:
  • A souvenier maker wants to create a scale model of threiffel tower. The effiel tower is 324 meters tall and has a base with dime
    8·1 answer
  • jack has 100 football cards that he wants to put in a photo album. Each page in the album will hold eight cards. How many pages
    15·1 answer
  • Draw the segment PQ with endpoints P(-2, -1) and Q(2,4) on the coordinate plane. Then find the length and midpoint of PQ.
    11·1 answer
  • A starting principal of $3,000 is invested at 7% compounded annually for 6 years. The compound amount (or future value) is: $___
    8·1 answer
  • Every Halloween, trick-or-treaters love going to Erica's house to see her spooky decorations and get some of her delicious caram
    11·1 answer
  • mrs ryan plants 3 flowers along 4 inches of a garden row. the garden row is 3 feet long. how many flowers can she plant along th
    13·1 answer
  • Shelly believes the honor roll students at her school have an unfair advantage in being assigned to the math class they request.
    8·1 answer
  • M/-5=-15 solve for m
    5·1 answer
  • PLEASE ANSWER THIS ASAP
    11·2 answers
  • Please help me with this question I will mark brainliest
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!