A unit circle has its center at the origin and has a radius of one. It is modeled by the equation
x² + y² = 1
We are given with <span>(x,-1)</span> .
Solving for x
x² + (-1)² = 1
x = 0<span />
Answer:
Try sketching an image of the rectangle. Area = length x width. To find the perimeter you would add up the length of all four sides.
Step-by-step explanation:
<h3>
Answer: Choice A) The set of all factors of 20</h3>
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Explanation:
Let's go through the answer choices
- A) The factors of 20 are 1,2,4,5,10,20. This list does not go on forever, so this set is finite.
- B) The multiples of 20 are 20,40,60,80,100,... and this list does go on forever. Simply add 20 to the last value to get the next one. This set is not finite, so it is infinite.
- C) This set is infinite as well because there are infinitely many negative integers. Any negative number is smaller than a positive number.
- D) There are infinitely many integers, so there are infinitely many integers greater than 20. This set is infinite.
- E) It's the same idea as before. This set is infinite. There are infinitely many rational numbers smaller than 20.
