Answer:
9r
Step-by-step explanation:
4r+9r-11r+7r
Combine like terms
13r -11r+7r
2r+7r
9r
Answer:
Hey there!
Step-by-step explanation:
This is ur answer....
<h2><em>60 + 120 = 180</em></h2>
<h2><em>DEF = 180</em></h2>
Hope it helps!
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38 , because since its 90 degrees at exact, your subtract 90 from 52 and you would get 38 for your x value