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Papessa [141]
3 years ago
15

What is the value of the discriminant of the quadratic equation −1 = 5x2 −2x, and what does its value mean about the number of r

eal number solutions the equation has?
The discriminant is equal to −16, which means the equation has no real number solutions.
The discriminant is equal to −16, which means the equation has two real number solutions.
The discriminant is equal to 24, which means the equation has no real number solutions.
The discriminant is equal to 24, which means the equation has two real number solutions.
Mathematics
2 answers:
stiv31 [10]3 years ago
9 0

Answer:

The discriminant is equal to −16, which means the equation has no real number solutions.

Step-by-step explanation:

\text{Given the quadratic equation }-1=5x^2-2x

we have to find the number of real number solutions the equation has.

The equation is

5x^2-2x+1=0

\text{Comparing above equation }ax^2+bx+c=0

a=5, b=-2, c=1

To find number of real solutions we have to find the discriminant

D=b^2-4ac

D=(-2)^2-4(5)(1)

D=4-20=-16

The value of discriminant is -16<0

Hence, the equation has no real roots.

Hence, option 1 is correct

exis [7]3 years ago
7 0

-The equation is actually

5x^2 -2x+1=0;

-The discriminant is b^2 -4ac=4-4•5•1=4-20=-16

-this means that the equation has no real number solutions

You might be interested in
Which quadratic equation has roots –2 and 1/5?
AysviL [449]

Answer:

The equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

Step-by-step explanation:

Checking the equation

5x^2\:+\:9x\:-\:2\:=\:0

putting x = -2 in the equation

5\left(-2\right)^2\:+\:9\left(-2\right)-\:2\:=\:0\:

2^2\cdot \:\:5-9\cdot \:\:2-2=0

2^2\cdot \:5-18-2=0

20-20=0

0=0

L.H.S=R.H.S

putting x = 1/5 in the equation

5\left(\frac{1}{5}\right)^2\:+\:9\left(\frac{1}{5}\right)-\:2\:=\:0\:

5\left(\frac{1}{5}\right)^2+9\cdot \:\frac{1}{5}-2=0

\frac{1}{5}+\frac{9}{5}-2=0

2-2=0

0=0

L.H.S=R.H.S

As putting x = -2 and x = 1/5 satisfy the equation.

Therefore, the equation 5x^2\:+\:9x\:-\:2\:=\:0 has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

4 0
3 years ago
7. As you consider your decision, you think about how most cars lose value over time. If a fully loaded Volkswagen Beetle deprec
svet-max [94.6K]
11,949.9126..... by my calculator.
3 0
3 years ago
HELP!
Alexxx [7]

Answer:

LIMIT

The policy will pay for up to

$100,000 of damage to

another person's property.

The policy will pay only

$100 per incident for a

tow truck

DEDUCTIBLE

The policyholder must pay

the first $1,000 of repair

expenses before insurance

will pay for anything,

PREMIUM

The policy offers coverage

for a cost of $178 per month

The policyholder must

pay $500 semiannually

to the insurance provider

Step-by-step explanation:

LIMIT is the maximum amount an insurer will pay toward a covered claim

DEDUCTIBLE is the amount paid out of pocket toward a covered claim

PREMIUM is the amount paid regularly to keep the policy in force.

6 0
3 years ago
Answer all these pleasep
irinina [24]

Answer:

ee flamingo

Step-by-step explanation:

3 0
3 years ago
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2x-5y=10 in slope intercept form​
den301095 [7]

Answer:

y= 0.4x + 2

Step-by-step explanation:

3 0
3 years ago
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