Answer:
0.0039 = 0.39% probability that she beats all 4 levels on the first try.
Step-by-step explanation:
For each level, there are only two possible outcomes. Either she can win the new level on the first try, or she cannot. The probability of winning a level on the first try is independent of any other level. This means that the binomial probability distribution is used 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.
She knows that she can win a new level on the first try 25% of the time.
This means that 
Janice plays through 4 levels.
This means that 
What is the probability that she beats all 4 levels on the first try?
This is P(X = 4). So


0.0039 = 0.39% probability that she beats all 4 levels on the first try.
The greatest common factor (GCF) of 15 and 30 is: 15
Factors of 15: 1, 3, 5, 15
Factors of 30: 1, 2, 3, 5, 6, 10, 15
The common factors between the two numbers are 1, 3, 5, and 15, but considering 15 is the highest number out of them all, it is the greatest common factor.
Answer:
8f-16g
Step-by-step explanation:
We have to simplify each term. So f becomes 8f. Then 4 times 4 becomes 16
Answer: B. 1/5
Step-by-step explanation:
Answer:
=4/5(N+7)N
Step-by-Step Explanation:
We move all terms to the left:
-(4/5(N+7)N)=0
Domain of the equation: 5(N+7)N)!=0
N∈R
We multiply all the terms by the denominator
-(4=0
We add all the numbers together, and all the variables
=0
N=0/1
N=0