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Sergio039 [100]
2 years ago
9

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Mathematics
1 answer:
lana66690 [7]2 years ago
8 0

Answer:

Since -8<0 then the roots α and β of the quadratic equation ax^2 + bx + c = 0 are unequal and imaginary: α and β are a pair of the complex conjugates.

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A bag contains 6 blue balls, 3 green balls and 3 yellow balls. What is the probability of choosing one blue ball and then a yell
EastWind [94]
Prob(first ball being  blue) =  6 / (6 + 3 + 3) = 6/12 = 1/2
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As the 2 events are independent the probabilities are multiplied 
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5 0
3 years ago
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Oksanka [162]
The answer is 7.3 or in other words 7 3/10

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3 years ago
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<img src="https://tex.z-dn.net/?f=%20-%20%20%5Cfrac%7B5%7D%7B8%7D%20%20%2B%20%20%5Cfrac%7B1%7D%7B4%7D%20" id="TexFormula1" title
bagirrra123 [75]

Answer:

\large\boxed{-\dfrac{5}{8}+\dfrac{1}{4}=-\dfrac{3}{8}}

Step-by-step explanation:

-\dfrac{5}{8}+\dfrac{1}{4}=\dfrac{1}{4}+\left(-\dfrac{5}{8}\right)=\dfrac{1}{4}-\dfrac{5}{8}\\\\\text{find LCD:}\\\\8=2\cdot4,\ \text{therefore. LCD(4, 8) = 8}\\\\\dfrac{1}{4}=\dfrac{1\cdot2}{4\cdot2}=\dfrac{2}{8}\\\\\text{continuing}\\\\=\dfrac{2}{8}-\dfrac{5}{8}=\dfrac{2-5}{8}=-\dfrac{3}{8}

4 0
2 years ago
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Answer:

5%

Step-by-step explanation:

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