For the wheel picture on the right assume that a person spins the pointer and is awarded the amount indicated by the pointer. If it costs $5 to play the game determine (a) the expectation of a person who plays the game and (b) the fair price to play the game. a. what is the expectation? $ ___
Answers
The expectation to play the game is $2.5 and the fair price to play is $7.5.
What is the expectation?
The expectation is defined as the weighted average value of the random variable which is the product of the value of the random variable and its possibility.
Expectation= ∑P(win)*amount of win or loss of random variable
=∑x*P(x)
Here given that there are only two possible outcomes $5 and $10. And the possibility of every outcome is the same which is 0.5 as they occupy the same area.
As we know
Expectation= ∑P(win)*amount of win or loss of random variable
= 0.5(5-5) +0.5(10-5)
=0.5*0 + 0.5*5
=0+2.5
=$2.5
As fair price= expectation + cost of play
⇒fair price= $2.5 + $5
⇒fair price= $7.5
Therefore the expectation to play the game is $2.5 and the fair price to play is $7.5.
Learn more about expectation
here: brainly.com/question/10675141
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Answer:
(a)
(b)
Step-by-step explanation:
First pic is a second is b
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25/35 - 7/35 =
18/35
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Answers
We know that for every 5 red bricks there were 2 gray bricks.
The total amount of red bricks and grey bricks in this sample is 7.
5 red bricks + 2 grey bricks = 7 bricks
Now, we divide 175 "total number of bricks used" by 7 "5 red bricks + 2 grey bricks = 7 bricks" and we will get a quotient of 25.
Now we know that 25 bricks is of the wall. The gray bricks are
so we can multiply 25 by 2 and we will get a product of 50. If 1/7 = 25 grey bricks so 2/7 would be the grey bricks.
175 - 50 = number of red bricks.
Therefore, there were 125 red bricks.
they need to be multiplication sentences though. for example: 1 × 75 = 75.
:)
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G.-9/4
H -9/7
J. 7
K.9
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G
Which statements are true about the solution to the equation when substituting values for a and b as specified?
Select all that apply.
A. If a=−3 and b=4 , then there is exactly one solution to the equation.
B. If a=−9 and b=13 , then there is no solution to the equation.
C. If a=9 and b=−2 , then there is no solution to the equation.
D. If a=−3 and b=−5 , then there are infinitely many solutions to the equation.
E. If a=9 and b=7 , then there is exactly one solution to the equation.
Answers
Answer:
A. If a=−3 and b=4 , then there is exactly one solution to the equation.
C. If a=9 and b=−2 , then there is no solution to the equation.
Step-by-step explanation:
The given equation is
To solve for , we need to use the distributive property
To find the right statement, we need to the given values.
For a=-3 and b=4,
So, choice A is true, because there's one solution to the equation.
For a=-9 and b=13,
The choice B is false.
For a=9 and b=-2
Choice C is correct, because there's no solution, because zero is not equal to -9.
For a=-3 and b=-5
Choice D is false, becuase there's only one solution.
For a=9 and b=7
Choice E is false, because there are infinite solutions in ths case.
Therefore, the right choices are A and C.
9x + 12 - 5 = ax + b
9x + 7 = ax + b
9x - ax - b = 7
Alright now plug in the numbers for each option.
I don't feel like doing all of them but I did A (one solution) and B (no solution because the two 9x's cancel out).