How does a math degree help in electrical engineering graduate studies? I am doing a double degree (bachelor of electrical engineering - bachelor of math) and I am in year 2 (my double degrees takes 5 years). My final goal is to enter electrical engineering graduate school. I love math and I am getting excellent grades for my bachelor of math degree but since my goal is entering electrical engineering graduate school, I feel that I am wasting my time by making my bachelor degree much longer. On the other hand, I think that I may forget the majority of my math theorems in a few years. I am thinking of dropping my math degree and just continue with my bachelor of electrical engineering but I can not decide for sure.

How would a double degree in math and electrical engineering help me in electrical engineering graduate school? Will I have any disadvantage if I just enter graduate school with a straight bachelor of electrical engineering? When it comes to graduate admission, does the graduate committee look more favorably to someone who has done a double degree in electrical engineering and math than someone with a straight electrical engineering degree? If you enter electrical graduate engineering school with just a straight electrical engineering degree, would then learning the required math be doable?

Edit: I am thinking of control theory and/or signal processing in graduate school.
Yes, it would help if you study Applied Mathematics. 

However, how much it would help depends on your intended field of study. If you plan to go into Computational Electromagnetics or Digital Signal Processing or similiar fields, then it's great. If not, I advise you not to invest more than one semester in studying Math.

To give you a perspective: I graduated with a BS (GPA:3.5) and MS (GPA:3.5) in EE only. I took the subject Math GRE and scored in the 30% percentile.