HELP ME PLEASE

A

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180, that is

x + 2x + 3x = 180

6x = 180 ( divide both sides by 6 )

x = 30 → A

A) 30

Step-by-step explanation:

The sum of all of the angles in a triangle have to equal 180 degrees.

Plug in 30 for x

3(30) = 90

2(30) = 60

(30)= 30

90+60+30= 180

Therefore x=30 degrees

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°