Emily earns $0.30 for every 0.75 mile she bikes. How much does she earn for 15 miles?
2 answers:
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Hello!
First, let's write the problem.
Subtract 3x from both sides.
The opposite of division is multiplication, so we are going to multiply in order to undo the fraction.
Our final answer would be,
Thanks!
-TetraFish
First, let's write the problem.
Subtract 3x from both sides.
The opposite of division is multiplication, so we are going to multiply in order to undo the fraction.
Our final answer would be,
Thanks!
-TetraFish
Answer:
0.71 = 71% probability that she or he used the lab on a regular basis.
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Student got an A
Event B: Used the lab on a regular basis.
Probability of an student getting an A:
55% of 40%(go to the lab on a regular basis).
15% of 100 - 40 = 60%(do not go to the lab on a regular basis).
So
Probability of getting an A and using the lab on a regular basis:
55% of 40%, so:
Probability that she or he used the lab on a regular basis.
0.71 = 71% probability that she or he used the lab on a regular basis.