Respuesta :

chibunduoyibe

Step-by-step explanation:

8) 9x-4+5x+16=180(cointerior angles sum up to 180)

14x+12=180

14x = 180-12

14x=168

x= 168/14 =12

9)8x+20=11x-31(corresponding angles are equal)

11x-8x=31+20

3x = 51

x=51/3

x =17

Upendo

8)

L||M

The angles are interior angles that are supplementary angles.

(9x - 4)° + (5x + 16)° = 180°

14x° + 12° = 180°

14x° = 168°

x° = 12°

Then the angles are,

at L| (9x - 4)° = 104° and M| (5x + 16)° = 76°

9)

L||M

The angles are corresponding angles.

(8x + 20)° = (11x - 31)°

20° + 31° = 11x° - 8x°

51° = 3x°

x° = 17°

Then the angles are,

L| (8x + 20)° = 156° and M| (11x - 31)° = 156°

Otras preguntas