Question

The diameter of earth is twice that of mars. the diameter of mars is three times that of pluto. the sum of the diameters of the earth mars and pluto is 30,000 km less than the diameter of uranus. the diameter of uranus is 52,000 km. what is the diameter of pluto?

HELPPPP

Answer 1

The diameter of Pluto is 2200

Explanation:

Let u = the diameter of Uranus

Let e = the diameter of Earth

Let m = the diameter of Mars

Let p = the diameter of Pluto

u = 52000

e + m + p = 52000 - 30000

e + m + p = 22000

e = 2m

m = 3p or p = m/3

substitute 2m for e and m/3 for p in the bold equation above and solve for m

2m + m + m/3 = 22000 Multiply all the way through by 3 to clear the fraction.

6m + 3m + m = 66000 Combine like terms

10m = 66000 Divide both sides by 10

m = 6600

P = m/3

p = 6600/3 = 2200

Answer 2

Explanation:

... g=10m/s??