Evaluate 9 to the power of 5 / 9 to the power of 2

The longer leg of a 30-60-90 trangle is 18

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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

What is 0.000008 meters in scientific notation