Solving for Angle Measures of Right Triangles — Cumulative exam
Question 6 • *CR CCSS Math 2 S2 [M2960OX]
Consider the sets below.U = {x | x is a real number}A = {x | x is an odd integer}R = {x | x = 3, 7, 11, 27}Is R ⊂ A?
Answer
A
yes, because all the elements of set A are in set R
B
yes, because all the elements of set R are in set A
C
no, because each element in set A is not represented in set R
D
no, because each element in set R is not represented in set A
Explanation
The set R contains 3, 7, 11, and 27. Each is an odd integer, so every element of R belongs to A. Therefore, R is a subset of A; choice B gives the correct reason.
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