Answer:
x=2 : )
Step-by-step explanation:
4(3x-1)=20
12x-4=20
12x=24
x=2
For 1 play, the chance of gaining $8 is 4/38, while the chance of losing the $1 is 34/38. Therefore, the expected value is ($8)(4/38) + ($-1)(34/38) = $(-1/19). Over 50 plays, which are mutually independent of each other, we multiply the number of plays by the expected value to get $(-50/19) = $-2.63.
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Answer:
P = 14.4
Step-by-step explanation:
Multiply out -3.1(6) and -2.1(2).
P - 18.6 = - 4.2
Add - 18.6 to the other side of the Equation.
P = 14.4
Are you looking to simplify it? If so I think the answer would be 1/2.
X(10)(5.75) = 230
Solve for x.