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
mestny [16]
3 years ago
12

If the discriminant of a quadratie equation is equal to -8 which statement describes the root

Mathematics
2 answers:
NemiM [27]3 years ago
6 0

Answer:

there are two complex roots

Step-by-step explanation:

Recall that for a quadratic equation

y = ax² + bx + c

the solution given by the quadratic formula is

x = ( -b ± √discriminant) / 2a

if the discriminant is negative, the radical term will become √ (negative number), which we know gives complex solutions. Hence we can eliminate real roots as possible answers.

Also notice that the "±" sign in the quadratic formula means that you will get 2 possible solutions:

x = ( -b + √discriminant) / 2a

or

x = ( -b - √discriminant) / 2a

Hence we know we will get 2 solutions.

Combining our findings, we can conclude that if the discriminant is negative, we will get 2 complex roots.

siniylev [52]3 years ago
3 0

Answer: A!!!!!!!!

Step-by-step explanation:

You might be interested in
On a subway route, station C is located at the midpoint between stations A and D. Station B is located at the midpoint between s
Finger [1]
The distance between C and A/D is 1,2 km. The distance between B and A/C is 0,6. It's in this order: A 0,6 km B 0,6 km C 1,2km D so the distance between B and D is 0,6 + 1,2 = 1,8 km
6 0
3 years ago
Read 2 more answers
What percentage is a solution that 20 grams of medication per 100mL of solution
klio [65]

Answer:

20%

Step-by-step explanation:

100mL is the same has 100 grams. Therefore 20 grams of a 100 gram solution would be 20% of the solution.

4 0
2 years ago
What is it called when transformation of the plane which reflects each point and then translates it called
Crank

The figures in a plane can be reflected, rotated, translated or dilated to produce new figures or images.

A transformation that moves all points to the same distance and in the same direction. The final figure looks the same, just moved over. It does not flip or gets rotated. It also does not change size.This type of translation is called glide reflection. Its the summation of translation and reflection.

6 0
3 years ago
Read 2 more answers
(3x3 + 11x2 + 4x + 1)/ (x2 + x)
lions [1.4K]
If those are exponents, then...

3x^3 + 11x^2 + 4x + 1
-----------------------------               Cancel out the 11x^2 with the x^2
          x^2 + x

3x^3 + 10x^2 + 4x +1
-----------------------------               Cancel out the x with the 4x
                 x

3x^3 + 10x^2 + 3x +1
6 0
4 years ago
Here is a number line:
cricket20 [7]

Answer:

1/4 is A as a fraction

2/8 is an equivalent fraction to A

Step-by-step explanation:

Count the lines :)

6 0
3 years ago
Other questions:
  • Double my tens digit to get my one digit. double me and I am less then 50
    14·1 answer
  • Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 25 minutes in 5 hours. How long di
    9·2 answers
  • Which of the following are solutions to the quadratic equation? Check all that
    14·1 answer
  • Can someone pls help! is this correct?
    5·2 answers
  • (5x+2)(2x-3) legit idk what to do xD
    10·2 answers
  • What is (9x + 5) - (6x - 8)?<br> What is (4x + 10) - (-3x + 5)?
    12·2 answers
  • Use the ladder method to find the factored version of this expression. (3x-18)
    15·1 answer
  • HELP<br><br>find the value of x in a circle 8,x, 20,36
    7·1 answer
  • Find the circumference of the object Use 3.14 or 22 for for T. Round to the nearest hundredth if necessary 11.4 in. The circumfe
    15·1 answer
  • What is the square root of 0.49 <br><br> A.49/7<br> B.49/10<br> C.10/7<br> D.7/10
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!