## sarakeranen Group Title I am unable to solve the two simultaneous equations: 0.991=0.0266x+0.0835y, 0.325=0.0499x+0.0077y. Could you help? 3 years ago 3 years ago

1. 0779olive Group Title

Use the fisrt equation to find y=f(x) on replace the y's expression found in the second equation to compute x and you'll find y (I have x=0.523...)

2. satellite73 Group Title

if i were doing it i would clear the decimals and write $266x+835y=9110$ $499x+77y=3250$

3. satellite73 Group Title

then i would go slap the math teacher for giving me such annoying numbers to work with. then i would use some computer algebra system to solve

4. estudier Group Title

Ha ha...:-)

5. satellite73 Group Title

well not that hard when you ask the machine. i got $x=\frac{ 1950680}{396183}$

6. satellite73 Group Title

how much arithmetic do you wan to do for a problem like this?

7. estudier Group Title

The thought police will be after u for suggesting an assault on apoor math teacher...

8. satellite73 Group Title

ok a mild slap with a kleenex. but really, who would even want to know such a thing. if this problem arose naturally from some actual data, then fine. get out the software and find your answer.

9. estudier Group Title

Either u or olive is a bit out...

10. satellite73 Group Title

i used a machine. i have no stake in this game

11. estudier Group Title

I guess olive used her machine wrong, I'm not going to check it though.

12. estudier Group Title

She got the principle right, that's the main thing...

13. sarakeranen Group Title

Thanks for your help. By the way, this is chemistry...determining unknown concentrations.

14. estudier Group Title

That's a reasonable excuse, no need to slap the chem teacher, then:-)