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3 years ago

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A prize of $100,$200,$500, or $1000 will be randomly awarded to a game show contestant, with the probabilities of winning each p

rize shown in the table below. What is the expected value of the prize that will be awarded?

1 answer:

guajiro [1.7K]3 years ago

4 0

Answer: 400

Step-by-step explanation:

A P E X

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<h3><u>Required</u><u> Answer</u><u>:</u><u>-</u></h3>

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Read 2 more answers

What are the exact solutions of x2 + 5x + 1 = 0? (5 points)

Rus_ich [418]

Answer:

$x=\frac{-5\pm\sqrt{21} }{2}$

Step-by-step explanation:

We use the quadratic formula here which says for a quadratic equation $ax^2+bx+c=0$ .

$x= \frac{-b\pm\sqrt{b^2-4ac} }{2a}$

Now in our case

$a=1\\b=5\\c=1$

so we have:

$x=\frac{-5\pm\sqrt{5^2-4(1)(1)} }{2(1)} =\frac{-5\pm\sqrt{21} }{2}$

$\boxed{x=\frac{-5\pm\sqrt{21} }{2} }$

Which are our solutions.

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3 years ago