9514 1404 393
Answer:
$3.36
Step-by-step explanation:
On each pencil, the profit was ...
pencil profit = pencil price - pencil cost
pencil profit = $0.22 -0.15 = $0.07
The number of pencils sold was ...
(4 dz)(12 pencils/dz) = 48 pencils
Then the total profit was ...
(48 pencils)($0.07 /pencil) = $3.36
The store made a profit of $3.36 from pencils.
Step-by-step explanation:
since what ? there is nothing here.
0.96 is the answer to this question
Let h=height of water
Let r=radius of water surface
r/h=16/8 =2, so r=2h.
The volume of water is:
v=(1/3)×π×r²×h
=(1/3)×π×(2h)²×h
=4/3πh³
dv/dh=4πh^2
By chain rule:
dv/dt=dv/dh×dh/dt
but
dv/dt=4
thus:
4=(4πh)×dh/dt
dh/dt=4/(4πh²)
when h=6cm we have:
dh/dt=4/(4π6²)
=0.00884 cm³/min
Answer:
22
Step-by-step explanation:
