[tex]\huge\boxed{x=41^{\circ}}[/tex]
The angles of a triangle always add up to [tex]180^{\circ}[/tex].
We know two of the angles — a right angle, which is [tex]90^{\circ}[/tex], and a [tex]49^{\circ}[/tex] angle.
Write an equation.
[tex]90+49+x=180[/tex]
Combine like terms.
[tex]139+x=180[/tex]
Subtract [tex]139[/tex] from both sides.
[tex]x=\boxed{41}[/tex]
