Answer:
9 yards
Step-by-step explanation:
because all angles on this are right angles, we know that the line that is 16 yards is not only parallel to the 7 yards line but also the ? line which we can name x.
that means that x+ the 7 the 7 yard line must be equal to the length of the 16 yard line.
so we can set up the expression
x+7=16
subtract 7 from both sides
x=9
