Answer: D
Step-by-step explanation: Quadrant 3 i (negative, negative)
<span>2n^3-n^2-136 :Equation:
Substitute 0 for n
</span> Simplify {20}^{3}<span> to </span><span>8000
</span>
<span>8000−<span>0<span><span>^2</span><span></span></span></span>−136
</span> Simplify <span>{0}^{2}<span></span></span><span> to </span><span>0
</span><span><span>8000−0−136
= 7864</span></span><span>
</span>
Answer:
9.6 seconds
Step-by-step explanation:
The equation for projectile motion in feet is 
where 
is the initial velocity in ft/s and 
is the initial height in feet.
We are given that the initial upward velocity is 
and the initial height is 
. Thus, plugging these values into our equation, we get 
as our equation for the situation.
The firework will land, assuming it doesn't explode, when 
, thus:
Since time can't be negative, then the firework will land after 9.6 seconds, assuming it doesn't explode at the time of landing.
Answer:
X = -2
Step-by-step explanation:
-x - 8 + 14x = -34
-x + 14x = -34 + 8
-x + 14x = -26
13x = -26
x = -26/13
x = -2
-(-2) - 8 + 14(-2) = -34
2 - 8 - 28 = -34
-34 = -34
