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3 years ago

Let A = {Dirk, Johan, Frans, Sarie}, B = {Frans, Sarie, Tina, Klaas, Henrika}, C = {Hans, Frans}. Find the number indicated.

1 answer:

5 0

Thank you for posting your question here at brainly. I assume the question should be "Find the number indicated". below is the answers:

B U C means B union C which combines them:
{Frans, Sarie, Tina, Klaas, Henrika, Hans} note that there is no need to write Frans twice. 

∩ means intersection which is only what the two sets have in common, in this case: 
{Frans, Sarie} 

the number is 2.

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Solve the equation x^2-4x+85=0

lara [203]

Can't factor
use quadratic
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
1x^2-4x+85=0
a=1
b=-4
c=85

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x= $\frac{4+/- \sqrt{16-340} }{2}$
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x= $\frac{4+/- (\sqrt{-1})(\sqrt{324}) }{2}$
remember that √-1=i
x= $\frac{4+/- i(\sqrt{324}) }{2}$
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3 years ago

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choli [55]

Answer:

0.3667

0.2727

Step-by-step explanation:

P (Blue) = P (large and Blue) + P (mid and Blue) + P (small and Blue)

P (Blue) = (0.5 * 0.2) + (0.4*7 / 12) + (0.1* 1 / 3)

P (Blue) = 0.3667

Conditional Probability:

P (Large / Blue ) = P (large and Blue) / P ( Blue)

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P (Large / Blue ) = 0.2727

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3 years ago

How much simple interest is earned on an investment of 1,250 if the money is invested for 5 years at an annual interest rate of

Alekssandra [29.7K]

<h3>Answer: $281.25</h3>

Work Shown:

i = P*r*t

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i = 281.25

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2 years ago

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34kurt

Answer:28.6

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3 years ago

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