Answer :
ANSWER
[tex]\begin{equation*} 10\text{ }in \end{equation*}[/tex]EXPLANATION
The scale used for the drawing is 1 inch to 10 yards. This implies that 1 inch on the drawing is equal to 10 yards on the actual field.
Therefore, we can write the proportion:
[tex]\begin{gathered} 1\text{ }in=10\text{ }yd \\ \\ x\text{ }in=100\text{ }yd \end{gathered}[/tex]where x represents the length of the field on the scale drawing.
Therefore, cross-multiplying and solving for x:
[tex]\begin{gathered} x*10=1*100 \\ \\ x=\frac{100}{10} \\ \\ x=10\text{ }in \end{gathered}[/tex]That is the length of the football field in the scale drawing.