# Thread: Homework HELP!! 3 problems!

1. ## Homework HELP!! 3 problems!

I have three problems that I can't seem to figure out for my homework this week. I basically just can't grasp how to do these.

1. F = C + 32 for C

2. (this has to be written in a+bi form)

3. 1/4

Any help would be greatly appreciated!!

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3. Better yet on the first one:

F= 9/5 C +32 for C

4. ## Ok

Originally Posted by Kaleid20
Better yet on the first one:

F= 9/5 C +32 for C
If you mean solve it then you would have $\displaystyle F-32=\frac{9c}{5}\Rightarrow{\frac{5(F-32)}{9}}=C$? if that is what you are asking

5. The 2nd was:
z^2+13z+36/z^2+17z+72 divided by z^2+4z/z^2+6z-16

I hope that is understood. Sorry I'm just not computer savvy enough to put it in as a picture.

6. Originally Posted by Kaleid20
The 2nd was:
z^2+13z+36/z^2+17z+72 divided by z^2+4z/z^2+6z-16

I hope that is understood. Sorry I'm just not computer savvy enough to put it in as a picture.
you can factor this into $\displaystyle \frac{(x+9)(x+4)}{(x+9)(x+8)}\Rightarrow{\frac{x+4 }{x+8}}$ and the second one can be reduced to $\displaystyle x\cdot\frac{x+4}{x^2+6x-16}$ now just divide