Acompany uses a periodic inventory system. on april 1, the company had 9 items of beginning inventory with the cost of $13 per unit. on april 18 the company purchased 15 units at $14 per unit. then on april, 29 the company sold 14 units. using weighted average the cost of the 14 units is closet to

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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.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth