<p>.30608=3/(10^j) + 6/(10^k) + 8/(10^m). Find j+k+m. sorry.</p>
<p>Also, another one:</p>
<p>Two coordinates (a,b) and (c,d) are on a coordinate plane.
a^2 + b^2 + c^2 + d^2 = 268 (I think)
ac + bd = 81</p>
<p>Find the distance between these points.</p>