There should be a typo in the question: the correct formula would be
Let's compute first. We have
If we intersect this set with X, we have
So, that would be the left hand side. For the right hand side, we have
And their union is again
Write an equation of the trend line rounding to two decimal places needed for this problem choose the points (1990, 253) and (20
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<span>You will need to weight those balls only twice.
You weight 6 balls, 3 on one side of weight and 3 on another, and other
3 balls you have are in your hand.
Check picture bellow</span>
Check picture bellow</span>