We're working on proportions and I'm stuck on this one:
(1 - 8f) / 2 is equal to (2 - f) / 6
Solve for f. Can anyone please help, and possibly explain this to me? Oh, and the answer isn't 0.04347826. Thanks, very much appreciated.
2007-11-01 09:05:53 · 4 answers · asked by rallyrae13 1 in Education & Reference ➔ Homework Help
Thanks Alex, you were right, I kept getting that but when I plugged it into the equation it didn't work right. I'm not sure what I was doing wrong before but when I worked it out this last time it came out right so thanks much.
2007-11-01 09:28:19 · update #1
Cross multiply.
6(1-8f)=2(2-f)
3(1-8f)=2-f
3-24f=2-f
1=23f
f=1/23=0.04347826
Sorry, but whoever claimed that is wrong. Unless there are specific instructions, that is the answer.
2007-11-01 09:18:47 · answer #1 · answered by Anonymous · 0⤊ 1⤋
(1 - 8f) / 2 = (2 - f) / 6
( 1 - 8f) 6 = (2 - f) 2
6 -48f = 4 -2f
-46 f = -2
f = 2/46
f = 0.04347826
f = 0.043
2007-11-01 16:22:30 · answer #2 · answered by Any day 6 · 0⤊ 1⤋
i got f = 1/23
2007-11-01 16:40:21 · answer #3 · answered by jst_askn 7 · 0⤊ 1⤋
You were dang close!! It is -0.04347826 You forgot that you were dividing a negative number!!!
2007-11-01 16:20:26 · answer #4 · answered by fire4511 7 · 1⤊ 0⤋