Answer:
There are a 25% probability that Christine fails the course.
Step-by-step explanation:
We have these following probabilities:
A 50% probability that Christine finds a tutor.
With a tutor, she has a 10% probability of failling.
A 50% probability that Christine does not find a tutor.
Without a tutor, she has a 40% probability of failing.
Probability that she fails:
10% of 50%(fail with a tutor) plus 40% of 50%(fail without a tutor). So

There are a 25% probability that Christine fails the course.
Answer:
4
Step-by-step explanation:
Answer:
Brain
Step-by-step explanation:
4(2x+1) = 3(x+8)
8x + 4 = 3x + 24
5x = 20
∴x = 4