contestada

Canada has a population that is about 1/10 as large as the united states. If canadas population is about 32 million, about how many people live in the united states? Explain the number of zeros in your answer.

Respuesta :

Call Canada's population [tex]c[/tex], and call the U.S. population [tex]u[/tex].

We see that [tex]c=\frac{u}{10}[/tex].  Substituting 32 million for c, we see that [tex]32,000,000=\frac{u}{10}[/tex].  Multiplying by ten, we see that [tex]320,000,000=u[/tex].  By using Algebra properly, we have ensured that the number of zeroes in our final answer is correct.