Using Sketchup Make 2015 with Mac OSX 9.9

Technical Problems SketchUp
1

Hi - i have an old but extremely reliable iMac (early 2009) running OSX 9.9. Can i reinstall with the same OSX?

2

See: SketchUp Hardware and Software Requirements | SketchUp Help

SU2015 requires OSX 10.8 or newer.