Answer:
[tex]1.5 \times 10^{17} miles[/tex]
Step-by-step explanation:
Given 1 light year = 6,000,000,000,000 miles
If the Double Helix Nebula, a conglomeration of dust and gas stretching across the center of the Milky Way galaxy, is 25,000 light-years from Earth, then:
25000 light years = x miles
To get x:
1 light year = 6,000,000,000,000 miles
25000 light years = x miles
Cross multiply
x = 25000 * 6,000,000,000,000
x = 150,000,000,000,000,000
Convert to standard form.
[tex]x = 1.5 \times 10^{17} miles[/tex]
Hence the Double Helix Nebula is about [tex]1.5 \times 10^{17} miles[/tex]
