Question

a certain star is 5.5x10^2 light years away from the earth. one light year is about 5.9x10¹² miles. how far from the earth (in miles) is the star?

Answer 1

Explanation

we can use a rule of three to find the value

Step 1

let x represents the number of miles that there are in 5.5 x10^2

if

$1\text{ light year}\Rightarrow5.9x10^{12}\text{ miles}$$\begin{gathered} 5.5\cdot10^2ligth\text{ years}\Rightarrow x\text{ miles} \\ \end{gathered}$

the proportion is the same, so

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