Answer:
49
Step-by-step explanation:
(4 × 10) + 9
= 49
ENHARMONICS are notes that are written differently but sound the same in the tempered scale.
It would be easier if you had answer choices, but it could be
ENHARMONICS are two notes that have the same pitch and are equivalent BUT have different names.
The refection in y axis will make the term in x negative so its either B or D.
The stretching will come from the -2/3 x
Answer is D
Answer:
x(15) = 21 lb
Step-by-step explanation:
Rate of change in volume of salt water solution = rate of volume incoming - rate of volume outgoing
dV/dt = 4 - 2 =2gal/min
So, the equation for volume at cetain time t at given conditions and values becomes,
V(t) = 2t + V
V(t) = 2t + 20 gal-------------------euqation (1)
Rate of change in amount of salt = rate of salt in - rate of salt out
dx/dt = {0.5*4} - {[x(t)/V(t)]*2}
dx/dt = 2-2[(x(t))/(2t+20)]
dx/dt = 2-[(x(t))/(v(t))] lb/min
Now, with integrating factor, we get
exp[∫(1/(1+10))dt)] = t+10
the equation becomes
(t + 10)*x' + x = 2*(t+10)
((t+10)*x') = 2*(t+10)
(t+10)*x = t² + 20t + C
As x(0) = 0,
x(t) = (t²+20t)/(t+10)
x(15) = (15²+20*15)/(15+10)
x(15) = 21 lb
128, 192, 256, 320,and 384 are the first five multiples.
