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Answer:
1) x=7
2) 148°
3)
4) 12
Step-by-step explanation:
1) 2x+4=18
Step 1: Subtract 4 from both sides.
2x+4−4=18−4
2x=14
Step 2: Divide both sides by 2.
2x
2 =14
x=7
2) 360° is the standard measure of a circle.
360° - 64° = 296°
296° ÷ 2= 148°