Answer:
Check Explanation
Step-by-step explanation:
The random variable X is the possible net amount that leaves or enters one's hands. It is the amount of winnings!
X can take on value of -($7 × 4) = -$28
(That is, none of the four raffle tickets bought is picked to win)
X can also take on value of [$150 - ($7 × 4)] = $122
(That is, one of the four raffle tickets bought is picked to win)
For the probability distribution function, we find the probabilities of the different amount of winnings.
First of, probability of losing = (96/100) = 0.96
Then, probability of winning = (4/100) = 0.04
Probability density distribution is then given as
X | probability
-$28 | 0.96
$122 | 0.04
To go a step further, expected winnings would be
E(X) = Σ xᵢpᵢ = (-28)(0.96) + (122)(0.04)
= -26.88 + 4.88 = -$22
The expected winnings show that this is not a risk worth taking.
Hope this Helps!!!
Answer: 4.09
Step-by-step explanation:
25.7 divided by pie is 8.18 which is the diameter. divide that by 2 and u get the radius.
Multiply x<span> and </span>3
<span>Multiply x and 1</span>
<span>The x just gets copied along.</span>
<span>The answer is x</span>
x
<span>3*x evaluates to 3x</span>
Because of the minus sign
<span>3x becomes - 3x</span>
<span>The answer is -3x</span>
<span>Multiply y and 2</span>
<span>Multiply y and 1</span>
<span>The y just gets copied along.</span>
<span>The answer is y</span>
y
<span>2*y evaluates to 2y</span>
<span>-3*x-2*y evaluates to -3x-2y</span>
<span>The answer is -3x-2y-2</span>
<span>-3*x-2*y-2 evaluates to <span>-3x-2y-2</span></span>
<span><span>so the first one is right</span></span>
<span><span>
</span></span>
The Second one hope it helped
Y=x^2-5, solve for x
y+5=x^2
x=√(y+5) so
f^-1(x)=√(y+5)
