(10 elements..........) 2^(10)<span>=<span>1024
</span></span><span>A discrete set with n elements has 2^n subsets. 2^n=1024 implies there are n=10 elements in this set. Any subset with 0 through n-1 elements is a proper subset of the set, as in each of those cases there exists at least one element of the set that is not in the subset, which is the requirement to be a proper subset. Therefore, we have 1023 proper subsets.</span>
Answer:
B. 9/20
Step-by-step explanation:
the circumference is 2r. Since the radius is one, that would be 2.
81/360=0.225, or 22.5% of the circumference. 22.5% of 2 is 0.45. 0.45=9/20, so the answer is B.
CHECK: 2 = 6.283
6.283x0.225=0.14137, or 9/20
You have to multiply them “7-5+w
I think I've got them
1. 127
2. 67
3. 76
4. 124
5. 100
6.118
7. 3/4
8. 4
9. 4
