It’s Quadrant I. The Cosine and its reciprocal are positive in the first quadrant only.
The first one is B
Second there is no answer
Third is A
Do you want an explanation?
I posted how to do the first and third question. The second question is by combining like term. X^4 plus 2x^4 is 3x^4, x plus 4x is 5x and there is -3x^3 and -7. That makes the answer 3x^4-3x^3+5x-7. Sorry for the sloppy handwriting.
EDIT: I apologize for getting the second question wrong in the beginning.
Answer:
about 63.1%
Step-by-step explanation:
For the first song, it is certain it isn't a duplicate. For the second song, the probability that it is not a duplicate is 4999/5000. The probability the third song is not a duplicate is 4998/5000.
Hence the probability that none of the 100 songs is a duplicate is ...
5000!/4900!/5000^100 ≈ 0.369120
Then the probability that one or more is a duplicate is ...
1 - 0.369120 ≈ 0.630880
Plug in the x value.
3(1-2)2=?
1-2= -1
3(-1)= -3
-3(2)= -6.
The answer is -6.
Answer:
|x|=9
Step-by-step explanation:
Absolute value is |x|=9