Answer :

Yes 4/5 is greater than 0.75 because if you put 0.75 as a fraction that would be 75/100 then you do the same denominator and 5 can go into 100 20 times and so you do that to the numerator and you get 80/100 and 75/100 so 4/5 id grater than 0.75.
Yes because 4/5 as a decimal is 0.80 so in  other words yes it is bigger than 0.75