Answer:
Finite Set
Step-by-step explanation:
A finite set is a set that contains a fixed number of elements, that is, the elements are countable. However, the opposite of a finite set is an infinite set which does not have a fixed number of elements and is uncountable.
Examples of a finite set are
- The set of all past American Presidents
- The set of all persons in China
- The set of birds in Australia
a
Answer:
-200+12 and one-third(4.5)
Step-by-step explanation:
Firstly, it can't be one of the first 2 answers because we go down by 200ft. Then, we know it can't be the last option because we gain 12 and 1/3 ft per minute. Therefore, it must be the third option.
Answer:
its the second from the top
Answer:
I think that A, B, and C are correct.
Step-by-step explanation:
1. Since measures 2 and 3 are a linear pair, they equal 180 degrees. A is correct.
2. Since measures 3 and 4 are also a linear pair, they too equal 180 degrees. B is correct.
3. Measures 2 and 3 are already established to be 180 degrees (check answer 1) , and measures 3 and 4 are also 180 degrees (check answer 2). Since they are both 180 degrees, they are congruent (equal), so C is correct.
D is NOT correct. Measures 1 and 3 are equal because they are vertical angles. We also know that they are acute angles (less than 90) so adding them together will equal less than 180 degrees.
Measures 2 and 4 are equal because they are vertical angles, and they are obtuse (more than 90 degrees). Adding them together will equal more than 180 degrees.
Logic tells us that something less than 180 CANNOT be equal to something more than 180. This proves that 2 and 4 and 1 and 3 are not congruent.
D is WRONG
Let h = the number of half dollars in the jar
and q = the number of quarters
h + q = 30
0.5h + 0.25q = 8.75
multiply the second equation by -2 to get
-h - 0.5q = -17.5
Now add the new equation and the first to eliminate h
h + q = 30
-h - 0.5q = -17.5
----------------------------
0.5q = 12.5
q = 25
There are 25 quarters, so there must be 5 half dollars
