The easiest way to do this is to multiple 7 and 3, which gives you 21. Julie will spend $21 on the gifts.
If two events are independent, then
.
Use formulas for conditional probabilities:
.
For independent events these formulas will be:
.
Now in your case
and
.
This shows that the only correct choice is A.
Answer:
F
Step-by-step explanation:
Answer:
400
Step-by-step explanation:
40 divided by .1