Bethany uses 8% of her paycheck to pay for gas. If she spent 34.12 on gas this week how much was her paycheck?
1 answer:
Answer: 426.5
Step-by-step explanation:
You know that she spent 34.12 on gas and you also know that that amount of money was the 8% of her paycheck.
Therefore, keeping the above on mind, you can write the following expression, where is the total amount of money of her paycheck:
When you solve for , you obtain the result shown below:
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Answer:
Step-by-step explanation:
Factor out of
Step-by-step explanation:
Given that,
a)
X ~ Bernoulli and Y ~ Bernoulli
X + Y = Z
The possible value for Z are Z = 0 when X = 0 and Y = 0
and Z = 1 when X = 0 and Y = 1 or when X = 1 and Y = 0
If X and Y can not be both equal to 1 , then the probability mass function of the random variable Z takes on the value of 0 for any value of Z other than 0 and 1,
Therefore Z is a Bernoulli random variable
b)
If X and Y can not be both equal to 1
then,
or
and
c)
If both X = 1 and Y = 1 then Z = 2
The possible values of the random variable Z are 0, 1 and 2.
since a Bernoulli variable should be take on only values 0 and 1 the random variable Z does not have Bernoulli distribution