Answer:
Explanation:
I am assuming the triangles are similar.
You can make a proportion between the two triangles and solve for x but you must match the sides properly.
RS ≈ MN
ST ≈ NO
Making a proportion between the sides:
=
cross multiplyand then divide
6 · 3 = 18
18 ÷ 4 = 4.5
x = 4.5
If you check the ratios - they are all the same.
For example 6 ÷ 4 = 1.5
7.5 ÷ 5 = 1.5
4.5 ÷ 3 = 1.5
this checks out