Which of the following could be points on the unit circle?
1 answer:
Answer:
see below
Step-by-step explanation:
For a point to be on the unit circle, the sum of the squares of the point's coordinates must be 1. Each value that is a fraction will have a square that is smaller than it is.
A: the given values add to 1; the sum of their squares cannot be 1.
B: a correct choice
C: one of the given values is more than 1, so the point cannot be on the unit circle
D: a correct choice
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Answer:
- The Expression will be defined if the denominator is not equal to 0 since any number divided by 0 is undefined.
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- the expression will be defined for all real numbers (a) BUT 3+a must not equal to 0 therfore (a) can be all real numbers but must never be equal to -3
Step-by-step explanation:
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