We want to find the probability that Berenice gets all the answers correct.
<u>1 question:</u>
Each question has 4 options, each option has the same probability of being the correct option, so she has a 25% of<u> randomly selecting the correct option.</u>
Then the probability here will just be equal to the number of correct options (1) over the total number of options (4)
p = 1/4
2 questions:
We already know the probability for one question, then the probability of getting two questions correct will be equal to the <u>product of the individual probabilities</u> for each question:
p = (1/4)*(1/4 = 1/16
3 questions:
Similar approach as before:
p = (1/4)*(1/4)*(1/4) = 1/64
4 questions:
p = (1/4)*(1/4)*(1/4)*(1/4) = 1/256
If you want to learn more, you can read:
brainly.com/question/23044118
Answer:
Harold ran 
more than his friend.
Step-by-step explanation:
Given:
Number of miles Harold ran = 
can be Rewritten as 
Number of miles Harold ran =
Number of miles his friend ran = 
can be Rewritten as 
Number of miles his friend ran =
We need to find number of miles Harold ran more than his friend.
Solution:
Now we can say that;
To find the number of miles Harold ran more than his friend we need to subtract Number of miles his friend ran from Number of miles Harold ran.
framing in equation form we get;
the number of miles Harold ran more than his friend = 
can be Rewritten as
the number of miles Harold ran more than his friend =
Hence Harold ran more than his friend.
Answer:
y=(-3/5)x
Step-by-step explanation:
5x-3y=20
-3y=-5x+20
y=(5/3)x-(20/3)
perpendicular lines have opposite reciprocal slopes
Answer:52
Step-by-step explanation:
