100
because 100 times 4 is 400.
I think the probability is 1 because they’re mixed
Answer:
Step-by-step explanation:
Given
Required
Get equivalent expression using completing the square
<em>Follow these steps:</em>
- <em>Take the coefficient of y; That is -12</em>
- <em>Divide it by 2; That is (-12/2)</em>
- <em>Square it: (-12/2)^2</em>
<em />
Add to both sides of the equation
Expand the right-hand side
Factorize:
Since both the expressions in x are equal to y then they are equal to each other, so
-2x + 3 = 13x - 4
-15x + 3 = -4
-15x = -7
x = 7/15
and y = -2(7/15) + 3 = 31/15 = 2 1/15
That expression is the expected value of your winnings, or "the average amount you will win (or lose) per game in the long run".