Let B be the event that Andrea passes her test, and let A be the event
<span>that she studies. We are given that P(A and B) = 17/20, and that P(A) = 15/16. </span>
<span>Now the probability that Andrea passes her test given that she has studied </span>
<span>is represented by P(BlA). The formula your teacher gave you can be written as </span>
<span>P(BlA) = P(A and B) / P(A). </span>
<span>So P(BlA) = P(A and B) / P(A) = (17/20) / (15/16) = (17/20)*(16/15) = 68/75.</span>
X+y=27
x=2y
2y+y=27
y=9
x=27-y
x=27-9=18
Multiply 45 and $1.65 then you get $74.25
Now subtract $100 and $74.25 to get the the amount of change
ANSWER IS $25.75
Answer:
yes
Step-by-step explanation:
