In augmented matrix form, the system is equivalent to
Subtract row 1 from row 2, and 4(row 1) from row 3:
Divide through row 2 by -2, and through row 3 by -3:
Subtract row 2 from row 3:
Divide through row 3 by 2:
The last row tells you . Then
and
The formula for the volume of a cube is V = a^3.
We know the volume is 125 cubic inches.
125 = a^3
Take the third square root
5 = a
The length of each edge is 5 inches
Answer: #4 = precipitation
#3 = evaporation
#2 clouds
#1= sun
#5= water
Step-by-step explanation: