Hãy phân tích các số A, B ra thừa só nguyên tố:
A=4²×6²; B=9²×15²

Step-by-step explanation:

a n d t h a t i s t h e m e a n i n g o f t h a t

what is the answer?

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.