# Math Help - Merging Equations

1. ## Merging Equations

Hey Everyone,

Unfortunately I'm having a tough time trying to figure out this problem:

Equation 1: $16\times I_1 = 100\times I_1^2 + 300\times I_2^2 + 0.02^2\times R$

Equation 2: $I2 = I1 - 0.02$

Equation 3: $I1 = 0.015 + \frac{1.5 + 0.02R}{75}$

I'm supposed to merge everything together and solve for R, but my calculations go right off the drawing board. I'd appreciate any help!

Thanks!

2. Better fix your LaTeX champ

and $I_2 = I_1 - I_2 \implies 2\times I_2 = I_1$

3. Originally Posted by pickslides

and $I_2 = I_1 - I_2 \implies 2\times I_2 = I_1$
I added the "times" to my LaTeX, is that any better?

I don't understand your statement that $I_2 = I_1 - I_2 \implies 2\times I_2 = I_1$

When you have the "imply" symbol, does that mean it's equal to the other equation? That doesn't seem to be correct.

4. Does anyone get 150 as the answer?

5. $I_2 = I_1 - I_2 \implies 2\times I_2 = I_1$

I'm sorry pickslides, I wrote the wrong equation...here is the correct one:

$I_2 = I1 - 0.02$

It's also fixed it in my first post.