Lo, Europa, Callisto, and Ganymede are known as the
Galilean moons. The astronomer
Galileo discovered these moons
using one of the first telescopes.
Why do you think that the
Galilean moons were the first
objects to be discovered with a
telescope?

(4,-2)

explanation:

6x+4y=16

-6x-9y=-6

-5y=10

y=-2

x=4

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks