Answer:
Step-by-step explanation:
18x + 9 = -3x + 13
21x + 9 = 13
21x = 4
x = 4/21
Answer:
a) 150°
b) 30°
Step-by-step explanation:
It is easier to work the exterior angle first.
<h3>b)</h3>
The sum of exterior angles is 360°. The exterior angle at any vertex of a regular dodecagon will be 1/12 that:
360°/12 = 30° . . . the measure of one exterior angle
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<h3>a)</h3>
The measure of an interior angle will be the supplement of the adjacent exterior angle.
180° -30° = 150° . . . the measure of one interior angle
The correct answer is 27 i hope this helps
I think it moves 5 units to the right Im not sure tho!!
