Answer:
i would pick line c and e before i would do a and e and b fnhwbh bfrhb bdh hejwhjd febhrew
Step-by-step explanation:
Angles on a straight line add up to 180°, so:
x + 60 = 180
x = 180 - 60
x = 120°
Volume of water in the tank:

Differentiate both sides with respect to time <em>t</em> :

<em>V</em> changes at a rate of 2000 cc/min (cubic cm per minute); use this to solve for d<em>h</em>/d<em>t</em> :


(The question asks how the height changes at the exact moment the height is 50 cm, but this info is a red herring because the rate of change is constant.)
8n- (2n-3) =12
8n-2n= 12+3
6n=15
n= 2.5
Hope this helps :)