Answer:
Step-by-step explanation:
Given that a contestants have a chance to increase their current winnings of $1 million to $2 million.
Also given that They have a 50% chance of winning. should they play
Thus we have 0.50 chance of getting additional 1 million or
0.50 chance of getting nothing.
Expected value of the gain by playing
=
Since expected value is positive, they can play and try.
Answer:
S = 1.25
B = 3.50
Step-by-step explanation:
I assume you need to know how much a burger and how much a soda is.
Basically it's a system of equations.
5B + 9S = 28.75
10B + 10S = 47.5
There are a few ways to do this, if you like I can show another, but this is how I usually solve a normal system of equations.
First solve for one variable in one equation. I am going to choose to solve for B in 10B + 10S = 47.5
10B + 10S = 47.5 (divide the whole thing by 10)
B + S = 4.75 (subtract S from both sides)
B = 4.75 - S
Now plug this B into the other equation.
5B + 9S = 28.75
5(4.75 - S) + 9S = 28.75
23.75 - 5S + 9S = 28.75 (Now just solve for S
4S = 5
S = 5/4
S = 1.25
Now plug THIS back into the first one.
B = 4.75 - S
B = 4.75 - 1.25
B = 3.50
Answer:
100
Step-by-step explanation:
To find mean/average you add all of them together, then divide by however number there are.
So
99+88+97+107+100+109 = 600/6 = 100
Answer:
441.60
Step-by-step explanation:
4 hours of 1.5 times is 38.40 + 19.20=57.60
40 hours at 9.60 = 384
384+ 57.60== 441.60