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Ainat [17]
3 years ago
14

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c?

Mathematics
2 answers:
Natalija [7]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Given

x² + 2x + c = 0 ← in standard form

with a = 1, b = 2 and c = c

If there are no real solutions then the discriminant

b² - 4ac < 0, that is

2² - (4 × 1 × c ) < 0

4 - 4c < 0 ( subtract 4 from both sides )

- 4c < - 4

Divide both sides by - 4, reversing the sign as a consequence

c > 1

Hence a possible value of c is 3

quester [9]3 years ago
3 0

Answer:

The possible value of 'x' is: 3.

Step-by-step explanation:

A polynomial has no real solutions when the discriminat is less than zero. Given the following polynomial: ax^{2} +bx+c = 0 the discriminant is given by: Discriminant = b^{2}-4ac

In this case, a=1, b=2. By substituting those values:

Discriminant = 2^{2}-4(1)c ⇒ Discriminant = 4-4c

Given that the discriminant should be less tha zero, then 'c' must be greater than one.

In this case, the only possible value of 'x' is: 3.

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2 years ago
5/16 divide by 20/40= SHOW WORK
Elenna [48]
5/16 divided by 20/40
5/16 times 40/20
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16 times 20=320
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Final Answer: 5/8
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2 years ago
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FACTOR !!!<br><br> a) 5x^2+25 <br><br> b) 2x^2-3x-2
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Step-by-step explanation:

(a): 5x^2 + 25 = 5 * x^2 + 5 * 5 = 5(x^2 + 5).

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= 2x(x - 2) + 1(x - 2) = (2x + 1)(x - 2).

3 0
3 years ago
Find the midpoint between these two points (-7,-6) and (2,5)​ PLEASE ANSWER!
QveST [7]

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4 0
3 years ago
anita has two sisters and three brothers. the mean of all their ages is 6 years. what will their mean age be 10 years from now?t
pogonyaev
Answer:
Now: 6 yr mean age
in 10 yrs? 16 yr mean age
in 20 yrs? 26 yr mean age

Why?  Because regardless of the relationship between each sibling's age, your always adding the 10yrs to each individual, which you are then dividing out to determine the mean age.  See proof below:

Including anita, there are 6 people.  We'll define each age as an unknown variable.  Assume we know nothing about the relationships between their ages

for example sake
anita's age = a
sister 1's age = b
sister 2's age = c
brother 1's age = d
brother 2's age = e
brother 3's age = f

Now:
mean age = (a + b + c + d + e + f)/(6 people) = 6 yrs

in 10 yrs:
mean age = ((a+10) + (b+10) + (c+10) + (d+10) + (e+10) + (f+10))/(6 people)
mean age = (a + b + c + d + e + f + 60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + (60)/(6 people)
mean age = (a + b + c + d + e + f)/(6 people) + 10

Notice the first term is the same expression of the mean age for "Now"
Thus, in 10 yrs:
mean age = 6 + 10 = 16 yrs

The same principle applies for "x" yrs from now, as long as we know what the mean age is "Now"









3 0
3 years ago
Read 2 more answers
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