3 years ago

How do you solve 1. X^2-x+1=0 2. X^2-2x+5=0 In the complex number system ?

Mathematics

1 answer:

Alexxandr [17]3 years ago

8 0

You use the discriminant (b²-sqr(4ac))/2a and if sqr(4ac) inferior to 0 then use i = sqr(-1)

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A teacher has found that the probability that a student studies for a test is 0.610.61, and the probability that a student gets

Ann [662]

Answer with step-by-step explanation:

Let

A=Student studies for a test

B=Student gets good grade on a test

The probability that a student studies for a test=P(A)=0.61

The probability that a student gets a good grade on a test=P(B)=0.79

The probability that both occur= $P(A\cap B)=0.56$

a.We have to find the events are independent

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b.We have to find $P(B/A)$

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$P(B/A)=\frac{0.56}{0.61}=0.92$

c. We have to find $P(A/B)$

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3 years ago

Find the Area of the figure below, composed of a rectangle and a semicircle. The

Goshia [24]

The answer is 72+4.5 pi= 86.1372

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Plz it’s for my finals!!

Mrac [35]

Pretty sure it would be D

Good luck on your finals!

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2 years ago

What is the answer of x/14 = 6/21

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Answer:

X=84/21

Step-by-step explanation:

X/14=6/21

X=(6/21)(14/1)

X=84/21

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