Can't see what the polygon looks like so I can't help srry
Assignment: 
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Answer: 
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Explanation: 
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[ Step One ] Divide Both Sides By 4

[ Step Two ] Simplify

[ Step Three ] Subtract 1 From Both Sides

[ Step Four ] Simplify

[ Step Five ] Divide Both Sides By 3

[ Step Six ] Simplify

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Step-by-step explanation:
What's A?
your 2nd answer is true. since your measure of the two bottom angles which are angles KML and MLk has to equal the measure of the angle outside the triangle. to the 2nd answer choice is true
What is the question? Pythagorean is not too hard. a^2 + b^2 = c^2