SOLUTION: Let A = {x | x < 5} and B = {x | x ≤ 7}.
Find A U B.
{x | x < 5}
{x | x ≤ 5}
{x | x ≤ 7}
{x | 5 < x ≤ 7}
Algebra.Com
Question 824135: Let A = {x | x < 5} and B = {x | x ≤ 7}.
Find A U B.
{x | x < 5}
{x | x ≤ 5}
{x | x ≤ 7}
{x | 5 < x ≤ 7}
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
A U B means "either A or B" in a sense, which basically means that x is either less than 5 OR x ≤ 7
Put together, this means that x ≤ 7 because x < 5 is part of x ≤ 7
Which is why the answer is {x | x ≤ 7}
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