N is 2/3 because 1 minus 1/3 is 2/3
3π/4 angle is in the second quadrant, so cos (3π/4) is going to be negative.
Reference angle of 3π/4 is (π - 3π/4) = π/4
cos(π/4) = √2/2
cos (3π/4) = - √2/2
Answer is C.
Answer:
The margin of error of his experiment is of 0.1074.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of 
.
The margin of error is of:
30 M & M's from a bag, and 3 of them are green.
This means that 
Standard 95% confidence level
So 
, z is the value of Z that has a p-value of 
, so 
.
Margin of error:
The margin of error of his experiment is of 0.1074.
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➷ In triangles, the longest length would be the hypotenuse.
The rule for Pythagoras states that a^2 + b^2 = c^2
[where c is the hypotenuse]
Therefore, the correct option would be
"No, Ariel should have added 9^2 and 12^2 and compared that to 15^2.
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
↬ ʜᴀɴɴᴀʜ ♡
