Answer:
Let b=x
Such that b^2 =8b-8 will x^2=8x-8
Using the almighty quadratic formula
x1={-b+sqrt (b^2-4ac)}/2a
x2={-b-sqrt (b^2-4ac)}/2a
From the question
a=1
b=8
c=-8
x1={-8+sqrt (8^2-4(-8))}/2
x1=(-8+5.66)/2
x1=-1.17
x2={-8-sqrt (8^2-4(-8))}/2
x2=(-8-5.66)/2
x2=-6.83
:.(x1,x2)=(-1.17,-6.83)
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
1/10(x+34)=−2(4−x)
(1/10)(x)+(1/10)(34)=(−2)(4)+(−2)(−x)(Distribute)
1/10x+17/5=−8+2x
1/10x+17/5=2x−8
Subtract 2x from both sides.
1/10x+17/5−2x=2x−8−2x
−19/10x+17/5=−8
Subtract 17/5 from both sides.
−19/10x+17/5−17/5=−8−17/5
−1910x=−57/5
Multiply both sides by 10/(-19).
10/−19)*(−19/10x)=(10/−19)*(−57/5)
x=6
Answer:
The expected value is $4.35
Step-by-step explanation:
For us to calculate the expected value , we need to multiply each of the given probability by the individual payout value and add
So we have it as;
0.35(1) + 2(0.2) + 5(0.1) + 8(0.2) + 10(0.15)
= 0.35 + 0.4 + 0.5 + 1.6 + 1.5
= $4.35
well, to do this we first need to find the mean of all values.
we need to find the distance of each value from that mean (subtract the mean from each value, ignore minus signs)
Then find the mean of those distances.
so, after we do all of that with the given numbers, our final result would be 2.333333333..... (It goes on) we round it up to 2.3, and viola! the answer is C.