Answer:
0.0082 = 0.82% probability that he will pass
Step-by-step explanation:
For each question, there are only two possible outcomes. Either the students guesses the correct answer, or he guesses the wrong answer. The probability of guessing the correct answer for a question is independent of other questions. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
In this problem we have that:
.
If the student makes knowledgeable guesses, what is the probability that he will pass?
He needs to guess at least 9 answers correctly. So









0.0082 = 0.82% probability that he will pass
Answer:
Look down
Step-by-step explanation:
So, to use distributive property you have to multiply the out side to the inside.
3(9-4)=15-8
Multiply 3and nine then 4.
3+27-12=15-8
I hope this helped you
Answer:
rate of change = -0.32
Step-by-step explanation:
Rate of change = slope,m

Answer:
Step-by-step explanation: