a = S − Sr. How do I solve for r?
2011-06-13 3:25 pm
So far I have tried the answer r = S - Sa, and that was wrong I don't really understand this at all!!!!
回答 (6)
2011-06-13 3:27 pm
✔ 最佳答案
Divide both sides by S:a/S = 1 - R
Multiply both sides by -1, and switch the equation
R - 1 = -a/S
Add 1 to both sides
R = 1 - a/s
2011-06-13 10:29 pm
You need to take the S out of both parts of the right hand side of the equation. So.
a = S(1 - r)
a/S = 1 - r
- r = a/S -1
r = 1 - a/S
a = S(1 - r)
a/S = 1 - r
- r = a/S -1
r = 1 - a/S
2011-06-13 10:28 pm
a = S â Sr
=> a = S(1 - r)
=> a/S = 1 - r
=> r = 1 - (a/S) ............(1)
=> r = (S - a)/S ............ (2)
Either one of (1) and (2) should do.
=> a = S(1 - r)
=> a/S = 1 - r
=> r = 1 - (a/S) ............(1)
=> r = (S - a)/S ............ (2)
Either one of (1) and (2) should do.
2011-06-13 10:27 pm
add Sr to both sides then subtract a from both sides then divide both sides by S
r=(S-a)/S
r=(S-a)/S
2011-06-13 10:27 pm
Sr = S - a
thus r = (S - a) / S
or
r = 1 - (a / S)
thus r = (S - a) / S
or
r = 1 - (a / S)
2011-06-13 10:35 pm
pardon me for asking, but where is the 1 come from?
收錄日期: 2021-05-01 13:42:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110613072540AACEk5i