[Tex/LaTex] place image next to text inside multicols

Question

I would like to place an image next to my text inside my multicols* environment. My thought had been to use the minipage environment, where I simply halve my columnwidth. But is this really the best way to implement an image next to a picture inside a multicols* environment or is there a better way?

\documentclass[a4paper,pagesize ,landscape, fontsize=5pt, fleqn]{scrartcl}

\usepackage[left=0.75cm,right=0.75cm, top=0.75cm, bottom=1cm]{geometry}
\usepackage{multicol}
\usepackage{amsmath, amsfonts, amssymb}
\usepackage{bbm}
\usepackage[svgnames,table,hyperref]{xcolor}
\usepackage{tikz}
\usepackage{array,multirow}
\usepackage[T1]{fontenc}
\usepackage{tabularx}

\pagestyle{plain}
\setlength{\columnsep}{30pt}
\setlength{\columnseprule}{0.4pt}

\begin{document}

\begin{multicols*}{3}

\[x^2 + y^2 = 1\] %here would the image be

\end {multicols*}
\end{document}  

Answer 1

Picking up on David Carlisle's suggestion, but using a second minipage to centre the image while not having it bump against the margin. (Obviously, possible without this, too.)

\documentclass[a4paper]{article}
\usepackage[left=0.75cm,right=0.75cm, top=0.75cm, bottom=1cm]{geometry}
\usepackage{multicol,lipsum,graphicx}

\begin{document}

\begin{multicols*}{3}
  \lipsum*[1-2]

  \noindent\begin{minipage}{.5\linewidth}
    \[x^2 + y^2 = 1\]
  \end{minipage}
  \begin{minipage}{.5\linewidth}
    \centering
    \includegraphics[width=.8\linewidth]{cath}
  \end{minipage}

  \lipsum[3-10]
\end{multicols*}

\end{document}