2 9 7 8 x July 8, 2019 16 32 64 128 2 9 7 8 x 1 4 2 9 7 8 x 1 2 9 7 8 x 1 3 2/9 - 7/8 x = 1 9 7 8 x 10 1 2 f propeller 9 7 8 x 10 1 2 f 9 7 8 x 10 1 2 yamaha Yamaha 9 7 8 x 10 1 2 f 4 2 8 x 9 7 3 Yamaha propeller 9 7 8 x 10 1 2 f 9 6 7 5x )= 8 2 x 4 2 7 8 9 x 2 3 2 9 x 7 8 as a fraction 2 8 9 7 6 x the mean is 6 2 8 9 7 6 x