A = (b*h) / 2 or A = :½ b*h. or A = 0.5*b*h
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The answer to the question is 112°
First, you must set up an equation to find x.
Then, you must use distributive property to simplify the parentheses.
Next, add like terms.
Then, subtract 20 on each side.
Next, divide 10 on each side.
Now, you must substitute 34 in for x.