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
adell [148]
3 years ago
9

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Mathematics
2 answers:
Dovator [93]3 years ago
5 0

Keywords

quadratic equation, discriminant, complex roots, real roots

we know that

The formula to calculate the <u>roots</u> of the <u>quadratic equation</u> of the form  ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}}{2a}

where

The <u>discriminant</u> of the <u>quadratic equation</u>  is equal to

b^{2}-4ac

if  (b^{2}-4ac)> 0 ----> the <u>quadratic equation</u> has two <u>real roots</u>

if  (b^{2}-4ac)=0 ----> the <u>quadratic equation</u> has one <u>real root</u>

if  (b^{2}-4ac)< 0 ----> the <u>quadratic equation</u> has two <u>complex roots</u>

in this problem we have that

the <u>discriminant</u> is equal to -8

so

the <u>quadratic equation</u> has two <u>complex roots</u>

therefore

the answer is the option A

There are two complex roots

SVETLANKA909090 [29]3 years ago
3 0
Hello there, the correct answer is:

A.
You might be interested in
PLZZZZ HELPPPPPP THIS IS TIMEDDDD!!!! *look at picture*
Kazeer [188]

Answer:

Height of the building = 50.8 ft

Step-by-step explanation:

A person and a building are casting the shadows at the same time of the day.

Triangles formed by the person and his shadow and the building and its shadow will be similar.

Therefore, corresponding sides of the similar triangles will be proportional.

\frac{x}{28}=\frac{5.8}{3.2}

x = \frac{5.8\times 28}{3.2}

x = 50.75

x ≈ 50.8 ft

5 0
3 years ago
Read 2 more answers
ashly went to olive garden and spent 28.45 on dinner. The tax was 8.5. What is her TOTAL bill after tax?
IgorC [24]

Answer:

$30.86

Step-by-step explanation:

28.45+( 28.45*0.085)

28.45+2.41

30.86

5 0
3 years ago
Read 2 more answers
PLZ HELP ME PLZ I NEED THE HELP
Dmitrij [34]

Answer:

<M = <S

Step-by-step explanation:

If ΔMNO ≅ Δ SQR then

<M = <S


5 0
3 years ago
What is the expression is equivalent(23×2)×5
timurjin [86]

Answer:

230

Step-by-step explanation:

8 0
3 years ago
Help plz need answer asap
AlladinOne [14]

Answer:

The image that is correct is the one with yellow starting at positive 4 and green at negative 4. The solution is anything less than positive 4.


3 0
3 years ago
Other questions:
  • What would a 20% increase of 25.9 be? I think it'd be 77.22 but not quiet sure
    15·2 answers
  • 6. The scatterplot below shows data for the nine french fry orders from the
    15·1 answer
  • The base of an energy pyrimad is always composed of
    8·1 answer
  • What is the equation of the axis of symmetry of the graph of y + 3x – 6 = –3(x – 2)2 + 4?
    9·2 answers
  • The population of fish in a certain lake increased from 350 to 430 over the months of March and April. At what rate is the popul
    11·2 answers
  • A method of estimating the number of people participating in a march is to assign someone to a spot on the sidewalk with the job
    8·1 answer
  • I dont know how to get people to answer but please i really really need help fast im begging anyone
    15·2 answers
  • This one is the one I need help with my final question
    15·1 answer
  • What is the value of x for the equation: x/3+x=x/6-1
    15·2 answers
  • Dylan's hiking club is planning to stay overnight at a camping lodge. Each large room can hold 15 hikers. There are 168 hikers.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!