Respuesta :

AL2006

Just keep multiplying by fractions equal to ' 1 '
until you have the units you need:

(6.4 x 10⁻⁸ mi/day) x (1 day / 24 hr) x (5280 ft/mi) =

          (6.4 x 10⁻⁸  x  5280 / 24)    (ft/hr)  =  1.408 x 10⁻⁵ ft/hr

Answer:

1.408 x 10⁻⁵ ft/hr

Step-by-step explanation: