Hello Shaheen, 

As long as you have passed that subject, you can surely apply for a course.

However, I am afriad that since you have only been able to score 48 marks in mathematics, you may not be able to match the cut offs, since your overall percentage would be brought down due to low scores you have scored in maths.

If you do not have any reserved seats through quota, getting into Delhi University might become more difficult for you if your overall percentage is really low.

However, if you wish, you may apply for B.Com Program instead of B.Com Hons. without using Maths as one of your BoF subjects.

I hope it was helpful, good luck!