Answer:
She can get 9 pizzas
Step-by-step explanation:
First you add 14 and 10 to get 24
Next you subtract 60 and 24 to get 36
Then you divide 36 by 4 to get 9
Answer:
420 sq.ft. per hour
Step-by-step explanation:
what was the question at the end its unclear what u wanted
Answer:
y=7, x=7
Step-by-step explanation:
They both equal y, so you can set the right part of the equations equal to each other
4x-21=2x-7
solve for x
2x-21=-7
2x=14
x=7
knowing x, we can now substitute back into one of the original equations to find y
y=4(7)-21=28-21=7
or
y=2(7)-7=14-7=7
Working Formula:
V = s^3
Given:
dV/dt = -4 cubic meters per minute
V = 125 cubic meters
Required: ds/dt (rate of change of edge per minute) at V = 125 m^3
Solution:
Differentiate, equation below
V = s^3
dV/dt = 3*s^2 (ds/dt)
-4 = 3*s^2 (ds/dt)
ds/dt = -1.33/s^2 -----------> eq. (1)
V = s^3
(125)^0.33 = (s^3)^0.33
s = 5 ------------> eq. (2)
Substitute eq. (2) to eq. (1), we get
ds/dt = -1.33/(5)^2 = -0.053 meters per minute
<em>ANSWER: -0.053 meters per minute</em>