how does v225=15????????
回答 (8)
2008-10-15 3:18 pm
✔ 最佳答案
if v mean square root then that means what number, multiplied by itself equals the original number. so for 225, 15 * 15 = 225
other example.... v100 = 10.
2008-10-15 3:37 pm
±√225
= ±√(15 x 15)
= ±15
= ±√(15 x 15)
= ±15
2008-10-15 3:12 pm
What is "v225"?
*** Oh ok Manisha, thanks.....then he/she should have stated this, or wrote it appropriately.
The Sqrt(225)...or....√225 = 15
==> 225 = 15²
That's how it works.
*** Oh ok Manisha, thanks.....then he/she should have stated this, or wrote it appropriately.
The Sqrt(225)...or....√225 = 15
==> 225 = 15²
That's how it works.
2008-10-15 3:12 pm
because 15^2 = 225
2008-10-15 3:19 pm
v=15/225=0.06666667
2008-10-15 9:04 pm
the "v" probably means square root so the square root of 225 = 15, so 15 = 15.
2008-10-15 3:13 pm
v is square root
2008-10-15 3:17 pm
Let x=225^1/2, then
x^2=225=>
x^2-225=0=>
x^2-15^2=0=>
(x-15)(x+15)=0=>
x=15 (reject the -ve root)
x^2=225=>
x^2-225=0=>
x^2-15^2=0=>
(x-15)(x+15)=0=>
x=15 (reject the -ve root)
收錄日期: 2021-05-01 11:21:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081015070851AA83XRB