Answer: 3.75 ft
Step-by-step explanation:
Here we are given the measure of the length of a window. Generally the length is given in the International System of units format (meters); however, in this case we are given the length in feet and inches:
[tex]3 ft+9 in[/tex]
Now, before converting this whole measure to feet, we have to know that [tex]1 ft=12 in[/tex], then we can perform the conversion:
[tex]9 in \frac{1 ft}{12 in}=0.75 ft[/tex]
This means [tex]9 in=0.75 ft[/tex]
Hence:
[tex]3 ft+9 i=3 ft+0.75 ft=3.75 ft[/tex] This is the measure of the length of the window in feet.