## anonymous 2 years ago How do I solve for x? 0=o.o3x^2+1.60x

1. anonymous

Hi, are you looking to solve this by hand or with a graphing calculator?

2. anonymous

I just need step by step on how to do this.

3. anonymous

$0=0.03x^2+1.6x$ $0=(0.03x+1.6)x$ So your two roots are given by $x=0$ and $0.03x+1.6=0 \longrightarrow \text{solve for x}$ does that make sense?

4. anonymous

I don't get what to do next though? :(

5. anonymous

6. nikato

|dw:1384646533925:dw| how would u solve for x

7. anonymous

I don't remember.. OH, WAIT. Don't you subtract the i.6 from the zero?

8. anonymous

1.6*

9. nikato

yea, subtract 1.6 on both sides. then what do u do to isolate the x on the left side after u subtract

10. anonymous

divide ?

11. anonymous

thankyou

12. nikato

yes, what do u get for x

13. anonymous

okay, so I got -106.666666? How do I write that? Would it just be -106?

14. nikato

are u sure u plugged the right numbers into ur calculator?

15. anonymous

yep.

16. anonymous

-3.2/0.03

17. nikato

whre did u get -3.2

18. anonymous

0-1.6

19. anonymous

oh..Oops. :I Awkward

20. nikato

yea, try again

21. anonymous

Okay, I got -53.3333

22. nikato

yea. and u can write that as -53 1/3 if u want. so x=0 or -53 1/3

23. anonymous

24. nikato

u'll have 2 answers for x

25. anonymous

So should I write down both or just one?

26. nikato

u should write down both becuz both ARE answers for x

27. anonymous

Thankyou so much!

28. nikato