10/100=0.1
1/4=0.25
0.1*0.25=0.025
The value for n is ![\frac{\sqrt{10} }{5}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B10%7D%20%7D%7B5%7D)
<h3>solving for n</h3>
<u>given data</u>
10n^{2} - 12 = -8
making n the subject of the formula
10n^{2} = -8 + 12
10n^{2} = 4
divide through by 10
n^{2} = 4 / 10
finding the square root of both sides
n = square root ( 4 / 10 )
![n = \sqrt{\frac{4}{10}](https://tex.z-dn.net/?f=n%20%3D%20%5Csqrt%7B%5Cfrac%7B4%7D%7B10%7D)
n = 0.632 or ![\frac{\sqrt{10} }{5}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B10%7D%20%7D%7B5%7D)
Read more the subject of formula here: brainly.com/question/21140562
#SPJ1
The 2nd choice down in correct.