The answer is A(45) = -211
Answer:
A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.
dH/dt = the rate of change of the height of the water in the tank with respect to the time
B) dV/dt is positive
C) dH/dt is positive
Step-by-step explanation:
We are given that;
V(t) is the volume of water in the tank and H(t) is the height of the water level at time t. Thus;
A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.
dH/dt = the rate of change of the height of the water in the tank with respect to the time
B) When the tank is one-fourth full, dV/dt is positive because the volume water in the tank is increasing with time.
C) when the tank is one-fourth full, dH/dt is positive because the height has increased from zero level to 0.25 times the height of the tank. Thus the height is increasing with time.
We know that
cos 45°=√2/2------> equation 1
in the triangle
cos 45°=m/(9√2)----> equation 2
equals 1 and 2
so
√2/2=m/(9√2)---> 9√2*(√2)=2*m-------> 9*2=2*m-------> m=9
the answer is
m=9 units
3 and 4 look right and the top 2 arent the clear but the other 2 are correct
Follow me it would help me out thanks