I tried put two tables in the same page. I read in the Internet that I can make this using the minipage. I use minipage but the two tables still in pages differents, not side by side. The piece of code that I used is:
\documentclass[11pt]{article}
\usepackage{amstext}
\usepackage{lmodern}
\usepackage{ragged2e}
\usepackage{mathtools,float,geometry}
\usepackage{booktabs,array,tabularx,threeparttablex}
\usepackage{subfig}
\begin{document}
\begin{table}[H]
\begin{minipage}{.2\textwidth}
\centering
\begin{tabular}{cc}
\toprule Tempo (s) & Per\'{i}odo (s)\\
\midrule 0,9509 & 1,3645\\
\hline 2,3153 & 1,3644\\
\bottomrule
\end{tabular}
\end{minipage}
\end{table}
\begin{table}[H]
\begin{minipage}{.2\textwidth}
\centering
\begin{tabular}{cc}
\toprule Tempo (s) & Velocidade (m/s)\\
\midrule 0,2733 & 5,3763\\
\hline 0,9496 & 5,3763\\
\bottomrule
\end{tabular}
\end{minipage}
\end {table}
\end{document}

tableenvironment. – cfr Apr 12 '16 at 01:20table. Twominipages. Twotabulars. – cfr Apr 12 '16 at 01:32minipages(I begin and end twominipages). I don't understand. Can you explain your ideia better for me, please? – Carmen González Apr 12 '16 at 01:34.2\textwidthis too little. See below. – cfr Apr 12 '16 at 01:440.4a bit, but if the total width of the two tables exceeds your total\textwidththen you cannot make them fit side-by-side without either making the tables smaller (smaller font, less content etc.) or making the\textwidthbigger (bigger paper, smaller margins etc.). Or you can rotate the entire page or the tables for landscape mode. But I don't know what you mean about the footer or how tall the tables are, so this may not help. – cfr Apr 12 '16 at 09:26