Answer: The length of the united states flag is [tex]2\frac{2}{19}\ feet[/tex]
Step-by-step explanation:
Since we have given that
Ratio of width to length of the united states flag is 10:19
So, Let the length of the united states flag be 10x
Let the width of the united states flag is 19x
As we have the width of the flag of Emerson's school = 4 feet.
According to question,
[tex]19x=4\\\\x=\frac{4}{19}[/tex]
So, our length of the united states flag will be
[tex]10x=10\times \frac{4}{19}\\\\=\frac{40}{19}\\\\=2\frac{2}{19}\ feet[/tex]
Hence, the length of the united states flag is [tex]2\frac{2}{19}\ feet[/tex]