ZA and ZB are vertical angles with mZA = x and mZB=42 - 30. What is mZA?
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Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

The value √10 and √15 are plotted on the number line

What does x = in this equation x+3+2x=x+5