Es urgente Di si estas expresiones son o no ecuaciones y explica por qué

5x + 2 = 17

9x – 6

4.3 – 5 = 7

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

How do i simply this radical expression?