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Greeley [361]
3 years ago
14

What is the value of the discriminant of the quadratic equation −2x2 = −8x + 8, and what does its value mean about the number of

real number solutions the equation has?
The discriminant is equal to 0, which means the equation has no real number solutions.
The discriminant is equal to 0, which means the equation has one real number solution.
The discriminant is equal to 128, which means the equation has no real number solutions.
The discriminant is equal to 128, which means the equation has two real number solutions.
Mathematics
2 answers:
irakobra [83]3 years ago
8 0
The discriminant is b²-4ac
-2x²+8x-8=0
in this case, b=8, a=-2, c=-8
so b²-4ac=8²-4(-2)(-8)=0
choice B is correct. 
PIT_PIT [208]3 years ago
4 0

Answer:

B) The discriminant is equal to 0, which means the equation has one real number solution.

Step-by-step explanation:

The given equation is -2x^2 = -8x + 8

This can be rewritten as 2x^2 - 8x + 8 = 0

Here the value of a =2, b = -8 and c = 8

Discriminant = b^2 - 4ac

Now plug in the above values in the discriminant, we get

= (-8)^2 - 4*2*8

= 64 - 64

= 0

Here the discriminant is 0, so we will get one real root.

Therefore, the answer B) The discriminant is equal to 0, which means the equation has one real number solution.

Hope this will helpful.

Thank you.

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Step-by-step explanation:

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General formula for a simple linear regression :

y = ab + c

Where ;

y = predicted variable ; a = slope / gradient

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From the result obtained from the calculator :

y = -0.01246X + 74.65552

Correlation Coefficient is used to measure the strength of relationship between linear variables.

The regression Coefficient obtained is - 0.20

This shows that there is a weak negative correlation between the age at auction and the price at which painting is sold. This is because the negative sign means that value of y decreases as x increases or vice versa, however, due to a correlation vale which is closer to 0 than 1 or - 1, we can conclude that the negative relationship between the variables is weak.

5 0
3 years ago
According to a study by de Anna students, the height for Asian adult males is normally distributed with an average of 66 inches
Maslowich
A. X ~ N(66, 6.25)

b.z_{1} =\frac{65-66}{2.5}=-0.4
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4 0
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H_{a}:\mu>50.07

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Where:

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s=7.0132 is the sample standard deviation

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\therefore t=\frac{52.86-50.07}{\frac{7.0132}{\sqrt{10}} }    

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4 0
3 years ago
GETS BRAINILIST!!!A class has 6 boys and 14 girls. What is the ratio in simplest form that compares number of boys to total numb
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Answer:

3:10

Step-by-step explanation:

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3. To make it in simplest form, divide both sides by 2

6 divided by 2 is 3

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4. Your answer is

3:10

7 0
3 years ago
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