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Sagot :
Answer: 20 degrees
Step-by-step explanation:
x+x+50=90
2x+50=90
2x=40
x=20 degrees, assuming you're trying to solve for x
Answer:
B
90°
Step-by-step explanation:
Complementary angles: Two angles whose measures sum to 90°.
Diagram B shows a pair of complementary angles as the sum of the angles has a right angle (90°) symbol.
Therefore, the measure of the angle is 90°.
To find x:
⇒ x° + (x + 50)° = 90°
⇒ 2x° + 50° = 90°
⇒ 2x° + 50° - 50°= 90° - 50°
⇒ 2x° = 40°
⇒ 2x° ÷ 2 = 40° ÷ 2
⇒ x° = 20°
Therefore, the two angles are: 20° and 70°.
Additional Information
- Diagram A shows an angle bisector (blue line) so x and (x + 50) are equal. Since x ≠ x + 50 this is undefined.
- Diagram C shows a linear pair (sum to 180°). Two angles whose measures sum to 180° are called supplementary angles.
- Diagram D shows vertically opposite angles. Vertically opposite angles are equal, so as x ≠ x + 50 this is undefined.
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