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EastWind [94]
3 years ago
15

If an unfair coin comes up heads​ 60% of the time and tails​ 40% of the​ time, what is the expectation if heads is valued at 1 a

nd tails is valued at​ -1?
Mathematics
1 answer:
monitta3 years ago
5 0
I would think the value would be .2 cause if you had 100 tosses you would expect 60 value for heads and -40 value for tails. giving you 20/100
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Show different ways to make 25,302
slamgirl [31]
20,000+5,000+300+2
(expanded form)

6 0
3 years ago
PLEASE HELP 25 POINTS!!!!! I NEED HELP ASAP
melisa1 [442]

Answer:

25

Step-by-step explanation:

square has 4 sides and 100 divided by 4 is 25

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I want you to help e with my assignment that will due next week
valentina_108 [34]
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5 0
3 years ago
Show that x + y : x - y= 3 : 2
insens350 [35]

Answer:

x + y : x - y = (5/2+1/2) : (5/2-1/2)

x + y : x - y = 3 : 2

Therefore,  x + y : x - y= 3 : 2 is proved.

Step-by-step explanation:

Given

x + y : x - y = 3 : 2

As

x + y = 3

x - y = 2

Solving to find x and y

\begin{bmatrix}x+y=3\\ x-y=2\end{bmatrix}

x-y=2

-

\underline{x+y=3}

-2y=-1

\begin{bmatrix}x+y=3\\ -2y=-1\end{bmatrix}

solve for y

-2y=-1

Divide both sides by 2

\frac{-2y}{-2}=\frac{-1}{-2}

y=\frac{1}{2}

\mathrm{For\:}x+y=3\mathrm{\:plug\:in\:}y=\frac{1}{2}

x+\frac{1}{2}=3

x+\frac{1}{2}-\frac{1}{2}=3-\frac{1}{2}

x=\frac{5}{2}

so

x=\frac{5}{2},\:y=\frac{1}{2}

Thus,

x + y : x - y = (5/2+1/2) : (5/2-1/2)

x + y : x - y = 3 : 2

Therefore,  x + y : x - y= 3 : 2 is proved.

7 0
3 years ago
In 2000, the median household income was $41,990. In 2010, it was $49,445. (Source: www.census.gov.)
pochemuha

The average rate of change in the median household income over this time period is $745.5

<h3>What is the average rate of change in the median household income over this time period?</h3>

The given parameters are:

2000, the median household income was $41,990.

2010, it was $49,445.

The average rate of change in the median household income over this time period is calculated as:

Average rate of change = (Difference in Income)/(Difference in years)

So, we have:

Average rate of change = (41990 - 49445)/(2000-2010)

Evaluate

Average rate of change = 745.5

Hence, the average rate of change in the median household income over this time period is $745.5

Read more about average rate of change at

brainly.com/question/8728504

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4 0
2 years ago
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