Answer:
Explanation:
For this triangle, we can find the angle adjacent to side length 4 using trig:
tan(theta) = 7/4
theta = tan^-1(7/4)
theta = 60.26
Now we use sine to find x:
sin(60.26) = 7/x
x = 7/sin(60.26)
x = 8.06
I don't know how far you need to round, so it can either be this or 8.1
Hope this helps!