IDNStudy.com, kung saan ang iyong mga tanong ay may mabilis na sagot. Makakuha ng hakbang-hakbang na mga gabay para sa lahat ng iyong teknikal na tanong mula sa mga miyembro ng aming komunidad.

an electric wire that is 900meters long is supported by 19 electric posts evenly spaced. How far apart are the post ?"

Sagot :

[tex]Let's\ use\ a\ simple\ math\ solution\ regarding\ with\ this\ situation... \\ \\ If\ the\ question\ states\ "evenly"\ therefore\ they\ are\ equal. \\ \\ Solution; \\ 18\ \cdot x=900\ meters \\ \\ x= \frac{900\ meters}{18} \\ \\ \boxed{\boxed{x=50\ meters}} \\ \\ Conclusion; \\ \\ Thus,\underline{50\ meters}\ are\ the\ gaped\ between\ a\ post\ to\ the\ other\ post. \\ \\ Hope\ it\ Helps:) \\ Domini[/tex]
Instead of 19x = 900, where x is the even spaces between each posts.
I will use 18x = 900. Why?

Well, to explain it clearly. Take a look at your hand (either left or right). If your fingers are the posts and the spaces in between are the x or the even spaces. It would make a 5 posts and 4 spaces in between. I hope my explanation is clear.

So, in this case. There would be 19 posts and 18 even spaces.

18x = 900
[tex] \frac{18x = 900}{x} [/tex]
x = 50 m

it would look like this:

| 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m | 50m |

| <- this sign is the post. I just draw it to emphasize more.

Now count the spaces and the posts. :) There would be 19 posts and 18 spaces. I hope you get my point. :)