1/n^2 = 3/192
Cross multiply:
192 * 1 = 3 * n^2
3n^2 = 192
Divide each side by 3:
3n^2/3 = 192/3
Cancel the 3's on the left side:
n^2 = 64
Take the square root of both sides:
n = 8 or -8
Cross multiply:
192 * 1 = 3 * n^2
3n^2 = 192
Divide each side by 3:
3n^2/3 = 192/3
Cancel the 3's on the left side:
n^2 = 64
Take the square root of both sides:
n = 8 or -8