# Search results

1. ### Determining the possible values of y for the graph y=x+2/3-x^2

I'm a further mathematics A level student, micromass. I appreciate your help but do you really think I would be attempting to to solve this equation if I was unaware that x^2=y works out as x=y^1/2? I know how graphical inequalities work pal, my problem is with the algebra, not the concept of an...
2. ### Determining the possible values of y for the graph y=x+2/3-x^2

Homework Statement Determine the possible values that y can take for the graph y=x+2/3-x^2 Homework Equations N/A The Attempt at a Solution y=k k(3-x^2)=x+2 3k-kx^2=x+2 -kx^2+3k-x-2=0 I've tried factorising my k terms and much more faffing about to no avail...help please? :s
3. ### Atomic/molecular level definition/description of density.

Thanks awfully Mapes, but I was already aware that Uranium has 92 protons and 141-6 neutrons, significantly more than Iron. I may be sounding somewhat dim, I'm all too aware, but I was rather hoping there was more to it than that? Or am I just over-complicating this whole business? Also, could...
4. ### Atomic/molecular level definition/description of density.

I am in the process of completing a short presentation on the properties of depleted uranium that make it so suited to it's use in modern munitions. I have stated that DU's high density means that a projectile made from it will have a much smaller cross sectional area than one made of steel...