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2 answers:
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Answer:
The measure of the sum of interior angles of a 11-gon is .
Each interior angle is approximately .
Step-by-step explanation:
A convex polygon has the measure of each interior angles to be less than .
But,
sum of interior angles of polygon = (n - 2) x
where n is the number of sides of the polygon.
For a convex 11-gon, we have;
sum of angles of a 11-gon = (11 - 2) x
= 9 x
=
Sum of angles of a 11-gon =
To check: convex polygons' interior angles are less than .
so that,
each interior angle of 11-gon =
=
Answer:
see the attachment
Step-by-step explanation:
(a) S1 is the set of all subsets of {t, u, v}. There are 2^3 = 8 subsets, the EMPTY set being one of them. They are listed in the attachment.
It seems likely your answer will need to match that shown in the attachment:
{EMPTY, {t}, {u}, ... , {t, u, v}}
where the elements of multi-element sets are listed separately: {t, u}, not {tu}.
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(b) S2 is the set S1 with <em>w</em> added to each subset. (see the attachment for a listing)
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(c) Correct, the sets are disjoint, since every set in S1 is different from every set in S2.
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(d) Each set has 8 elements; the sets are the same size. You know this because you created set S2 from set S1. (See (b), above.)
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(e) The sets are disjoint (see (c)), so the total number of elements in their union is the total of the numbers of elements in each set: 8 + 8 = 16.
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(f) P(A) is undefined here, so none of these questions can be answered.
