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maxonik [38]
3 years ago
14

Ten thousand raffle tickets are sold for $1 each. One first prize of $2000, 4 second prizes of $700 each, and 8 third prizes of

$300 each are to be awarded, with all winners selected randomly. If you purchase one ticket, what are your expected winnings? 132 cents -$0.28 72 cents -$0.88
Mathematics
1 answer:
Nina [5.8K]3 years ago
4 0

Answer:

72 cents.

Step-by-step explanation:

The expected winnings is the amount times the probability that you will get that amount.

2,000 * (1/10,000) = 2,000 / 10,000 = 2 / 10 = 0.2.

700 * (4 / 10,000) = 2,800 / 10,000 = 28 / 100 = 0.28.

300 * (8 / 10,000) = 2,400 / 10,000 = 24 / 100 = 0.24.

0.2 + 0.28 + 0.24 = 0.72.

Hope this helps!

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Apply green’s theorem to evaluate the integral 3ydx 2xdy
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The value of the integral 3ydx+2xdy using Green's theorem be - xy

The value of    \int\limits_c 3ydx+2xdy  be -xy

<h3>What is Green's theorem?</h3>

Green's theorem relates a line integral around a simple closed curve C to a double integral over the plane region D bounded by C.

If M and N are functions of (x, y) defined on an open region containing D and having continuous partial derivatives there, then

\int\limits_c Mdx+Ndy = \int\int\〖(N_{x}-M_{y}) \;dxdy

Using green's theorem, we have

\int\limits_c Mdx+Ndy = \int\int\〖(N_{x}-M_{y}) \;dxdy ............................... (1)

Here N_{x} = differentiation of function N w.r.t. x

          M_{y}= differentiation of function M w.r.t. y

Given function is: 3ydx + 2xdy

On comparing with equation (1), we get

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Now, N_{x} = \Luge\frac{dN}{dx}

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and, M_{y} = \Huge\frac{dM}{dy}

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The value of  \int\limits_c 3ydx+2xdy  be -xy.

Learn more about Green's theorem here:

brainly.com/question/14125421

#SPJ4

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