Answer:
x = 41°
Explanation:
A rectangle has 4 right angles, that is, each interior angle = 90°.
Therefore, the measure of the angle marked x is calculated as follows:
x + 49° + 90° = 180°
Solve for x
x + 139 = 180
Subtract 139 from each side
x + 139 - 139 = 180 - 139
x = 41°