Answer:
Step-by-step explanation:
It's easier to convert the angle into degrees.
5π/8 ≅ 112.5°, which is in quadrant II
So, this is a proportion problem. If we express 75% as a fraction (3/4ths), we have:

Since he won all of his games, we add the number won (x), to the number previously won and divide it by the total games played which is just the previous games played plus the number of current games played, so since he lost no games we still add x to the denominator as well. Solving this gives us:

That x value is 20.
Answer: I think the answer is the same thing I can’t show a Step-by-step explanation because Math-way requires a premium to show a step-by-step explanation, anyway the answer is 4xy + 2y = 9, I’m sorry about that. :(
Step-by-step explanation: Well anyway, The standard form of a linear equation is Ax+By=C.
The answer to this would be O