Answer:
df
Step-by-step explanation:
<span> sqrt (2160x8)(60x2) =
12 x4 • sqrt(15)
</span>
<span> 12 x4 • sqrt(15) </span>
28 / 49
divide by 7 at top and bottom
(28/7) / (49/7)
4 / 7
Helium has a zero charge because it has to protons added to 2 electrons. The equation is +2+-2. That equation equals zero.
By the way I had this question on my homework today!