20x + 15k is the answer we just have to remove the bracket and add the terms
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Answer: 23
Explanation: simplify using PEMDAS so solve parentheses, then solve the exponent, multiply the second number by 4, and then add, then subtract.
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Add up the subtended arcs that these chords cut to get
44+86 = 130
Then divide that result by 2
130/2 = 65
Final Answer: choice A) 65 degrees