<span><span>8<span>c^2</span></span><span>(<span>3−<span>c^4</span></span>)</span></span><span>=<span><span>(<span>8<span>c^2</span></span>)</span><span>(<span>3+<span>−<span>c^4</span></span></span>)</span></span></span><span>=<span><span><span>(<span>8<span>c^2</span></span>)</span><span>(3)</span></span>+<span><span>(<span>8<span>c^2</span></span>)</span><span>(<span>−<span>c^4</span></span>)</span></span></span></span><span>=<span><span>24<span>c^2</span></span>−<span>8<span>c^6</span></span></span></span><span>=<span><span>−<span>8<span>c^6</span></span></span>+<span>24<span>c^<span>2</span></span></span></span></span>
(burn time)/(8 h) = (21 cm)/(14 cm)
burn time = (8 h)*(21/14)
burn time = 12 h
Elio expects the 21 cm candle to burn 12 hours.
Y=-3x+5
y=-8x+25
-3x+5=-8x+25
-20=-5x
x=4
y=-3(4)+5=-7
6(n+1)= ?? When n = 9
6(9+1)=?
6x10=60