Answer: $2.40
Step-by-step explanation:
$60.00 x .04 = $2.40
9514 1404 393
Answer:
d. 14 -3x
Step-by-step explanation:
If you want to substitute for y in the second equation, you must use the first equation to find an expression for y.
3x +y = 14 . . . . . . first equation
y = 14 -3x . . . . . . subtract 3x from both sides
This gives you the expression for y that you want to use for substitution. It matches the expression of choice D.
y = 14 -3x . . . . matches D
I'm not so sure about the first one but I think it's B
and for the second it would be certain because all of the tulips are red.
Answer:
72πcm³/s
Step-by-step explanation:
Volume of the spherical balloon V = 4/3πr³
dV/dr = 4πr²
The rate at which the volume of the balloon increasing is expressed as;
dV/dt = dV/dr • dr/dt
dV/dt = 4πr² • (2)
Given
Radius r = 3cm
dV/dt = 4π(3)² • (2)
dV/dt = 36π×2
dV/dt = 72πcm³/s
Hence the rate at which the volume is increasing is 72πcm³/s
