Solve 2x-6=-12
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Find the domain of the following expression: 1/(√x)-2

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

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