Select all of the expressions that r true
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Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

What is the measure of one interior angle of a pentagon

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.