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3 years ago

Which of the following statements are true of the discriminant?

Mathematics

2 answers:

sasho [114]3 years ago

7 0

Answer:

The correct options are A, C and D.

Step-by-step explanation:

We know that,

<em>The quadratic formula for the quadratic equation $ax^2+bx+c=0$ is $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ .</em>

Now, we have,

The discriminant is $D=b^2-4ac$ .

So, from the options, we get that,

The true statements for the discriminant are,

A: The discriminant is $D=b^2-4ac$ in the quadratic formula.

C: The discriminant is the radicand of the quadratic formula.

D: The discriminant is the value under the radical in the quadratic formula.

OverLord2011 [107]3 years ago

3 0

Answer:

The answer is A,C,D

Step-by-step explanation:

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777dan777 [17]

Answer:

Answer: The mean increases by 3

Step-by-step explanation:

The original data set is

{50, 76, 78, 79, 79, 80, 81, 82, 82, 83}

The outlier is 50 because it is not near the group of values from 76 to 83 which is where the main cluster is.

The original mean is M = (50+76+78+79+79+80+81+82+82+83)/10 = 77

If we take out the outlier 50, the new mean is N = (76+78+79+79+80+81+82+82+83)/9 = 80

So in summary so far

old mean = M = 77

new mean = N = 80

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3 years ago

What is the general form of the equation of the given circle with center A

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3 years ago

Please hurry I’m being timed! (50 pts)

photoshop1234 [79]

Answer:

Step-by-step explanation:

An excluded value is any value of x that makes the denominator of the rational expression zero as this would make the expression undefined.

For expression A

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x² - 4 is a difference of squares, thus

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3 years ago

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