Answer:
(Not official) I think it is A
Step-by-step explanation:
V=(1/3)πr²h
∴ dV/dt
=(π/3)[r²(dh/dt)+h2r(dr/dt)]
=(π/3)[(30)²(-2)+40(2)(30)(2)]
=(π/3)[-1800+4800]
=1600π in³/sec
Answer: 1600π in³/sec
5) v4 over 25
6) 81b^8
8) 2
9) 8
Answer:
Then you don't change the sign.
Two like signs become a positive sign.
Two unlike signs become a negative sign.
Answer:
2x+1^2(2x-1)
Step-by-step explanation:
Brainliest if this helps
