Since percent means 'over 100', you can put 42 over 100:

. Since .42 is less than .44, that means that
.44 is your answer.
Like terms:
1.4c, -2c, -7.3c
11.4 has no like terms
no it is not one x cannot have 2 y's.
He ran 26 miles answer is 26
5 numbers chosen from 25 can be done in 25C5 = 25!/(5!*20!) = 53,130 ways. The probability of choosing the correct set of 5 numbers is
1/53,130