Choose the student who wrote the correct inequality.
2 answers:
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Answer with Step-by-step explanation:
We are given that
P(A)=0.4 and P(B)=0.7
We know that
We know that
Maximum value of =1 and minimum value of
=0
It is not possible that is equal to 1.1
Multiply by (-1) on both sides
Again,
Multiply by (-1) on both sides
Hence,
Answer: $9 per hour at his job as a cashier and $8 per hour at his job delivering newspapers.
Step-by-step explanation:
1. Let's call the amount he got paid per hour at his job as a cashier: .
Let's call the amount he got paid per hour at his job delivering newspapers: .
2. Keeping on mind the information given in the problem above, you can make the following system of equations:
3. You can solve it by applying the Substitution method, as following:
- Solve for one of the variables from one of the equations and substitute it into the other equation to solve for the other variable and calculate its value.
- Substitute the value obtained into one of the original equations to solve for the other variable and calculate its value.
4. Therefore, you have:
Then:
Finally:
Therefore he got paid $9 per hour at his job as a cashier and $8 per hour at his job delivering newspapers.