Respuesta :

ally7181

Answer:

1.8mph

Step-by-step explanation:

you must multiply both fractions by the reciprocal of 4/9 which is 9/4

(4/5 * 9/4) / (4/9 * 9/4)

(36/20) / (36/36)

9/5 or 1.8 / 1/1 or 1

1.8/1 = 1.8 mph