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put this solution on YOUR website!The diameter of Earth is about twice that of Mars.
E = 2M
:
The diameter of Mars is about three times that of Pluto.
M = 3d & E = 2M
Therefore:
E = 2(3d)
E = 6d
:
Together, the sum of the diameters of Earth, Mars, and Pluto is about 30,000 kilometers less than the diameter of Uranus.
E + M + d = U - 30000
:
If the diameter of Uranus is about 52,000 kilometers, what equation would be used to find the approximate diameter of Pluto? Let d = diameter of Pluto.
d = U - 30000 - E - M
d = 52000 - 30000 - E -M
d = 22000 - E - M
:
Substitute 6d for E and 3d for M
d = 22000 - 6d - 3d
d = 22000 - 9d
d + 9d = 22000
10d = 22000
d = 22000/10
d = 2200
