4 years ago

Which of the following is a solution of x^2 + 2x + 8?

1 answer:

4 0

X^2 + 2x + 8 = 0

(x + 1)^2 - 1 + 8 = 0

(x + 1)^2 = -7

x + 1 = sqrt (-7) = i sqrt7

x = -1 + i sqrt7

Its B

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Dmitry [639]

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Free_Kalibri [48]

It has reflection and rotation symmetry

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beks73 [17]

Answer:

50 +25

Step-by-step explanation:

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Marianna [84]

Answer:

The probability that the proportion of the core being used at any particular time will be less than 0.10 is 0.08146

Step-by-step explanation:

$\mu =\frac{\alpha }{\alpha +\beta } = \frac{1}{1 + \frac{\beta}{\alpha} }$ 1/3 0.33 = 33.33 %

The Probability of that the proportion of the core being used at any particular time will be less than 0.10 is given by

PDF = $\frac{x^{\alpha -1} (1-x)^{\beta -1} }{\int\limits^1_0 {u^{\alpha -1} (1-u)^{\beta -1}} \, du }$

where x = 0.1

α = 2 and β = 4

PDF = $\frac{0.0729 }{\int\limits^1_0 {u^{\alpha -1} (1-u)^{\beta -1}} \, du }$ = 1.458

CDF = $\frac{\int\limits^{0.1}_0 {t^{\alpha -1} (1-t)^{\beta -1}} \, du }{\int\limits^1_0 {u^{\alpha -1} (1-u)^{\beta -1}} \, du }$ = 0.08146

The probability that the proportion of the core being used at any particular time will be less than 0.10 = 0.08146.

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Nat2105 [25]

489.02

hope that helps!

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