Answer:
7.3
Step-by-step explanation:
The two triangles are similar, meaning that they have the same angles but the triangles are in different sizes. To solve this, use proportions:

Cross multiply:

Answer:
5
Step-by-step explanation:
From the list of choices that you have provided, √x + 2 is the greatest value.
I honestly don't see what 2 < x < 6 has to do with anything.
Answer:
2
Step-by-step explanation:
12.80=6.4x
12.8/6.4=2
x=2