safi30360oz0c34 safi30360oz0c34
  • 09-12-2019
  • Mathematics
contestada

How many real solutions are there for the following equation?

0=12x2+x−1
A
0

B
3

C
2

D
1

Respuesta :

mberisso
mberisso mberisso
  • 09-12-2019

Answer:

two real solutions (Answer C)

Step-by-step explanation:

You can study the discriminator of this expression to find your answer.

Recall that the discriminator of a quadratic equation of the form: [tex]ax^2+bx+c=0[/tex] is: [tex]b^2-4ac[/tex]

So for this equation, [tex]a=12, \,b=1, \,and \,c=-1[/tex]

Therefore, the discriminator gives: [tex](1)^2-4(12)(-1)=49[/tex] which is larger than zero.

This tells us that the equation has two real solutions.

Answer Link

Otras preguntas

What color is seen when the red light is on
You are offered $150 in exactly one year. Each year thereafter forever, you (or your estate) will receive an amount 2% higher than the previous year (so you wil
define thermopile and peltiers??​
Asking "Who would buy my product?" in a survey is an example of what? Doing research to identify your target market Market projection Direct mail Whining
-4w+18w+2=10-6w What is w?
12. How much do 21 bushels of sweet corn weigh? Vegetable weight of 1 bushel Asparagus 24 pounds Beets 52 pounds Carrots 50 pounds Sweet corn 35 pounds
Quotes that describe ms.maudie in to kill a mockingbird including page number
What colonial city had the largest population
The word (pipes) has 6 different meanings what are they?
Which of the following neurotransmitters is most associated with movement, learning and memory? (2 points) acetylcholine dopamine serotonin GABA norepinephrine