Which equations are equivalent? Select all that apply. 1 + x = 3 x – 4 = -2 1 + x = -2 x + 3 = 5 x – 5 = 3
2 answers:
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Answer:
Step-by-step explanation:
To solve problems like this, we need to multiply the base , , the amount of times as the exponent, 4.
Essentially, the equation is x
x
x
.
The product would be .
Now we can't forget that the exponent is a negative. But because the exponent is an even number, we don't need to worry about that.
Hope this helped :)
Answer:
The expected value of the safe bet equal $0
Step-by-step explanation:
If
is a finite numeric sample space and
for k=1, 2,..., n
is its probability distribution, then the expected value of the distribution is defined as
What is the expected value of the safe bet?
In the safe bet we have only two possible outcomes: head or tail. Woodrow wins $100 with head and “wins” $-100 with tail So the sample space of incomes in one bet is
S = {100,-100}
Since the coin is supposed to be fair,
P(X=100)=0.5
P(X=-100)=0.5
and the expected value is
E(X) = 100*0.5 - 100*0.5 = 0