PLEASE FAST WORTH ALL OF MY GRADE!! In the early days of China, before the rise of dynasties, early Chinease civilizations were...

1. Large and wealthy cities in the Gobi Desert

2. Small farming villages along the Indus river Valley

3. Small farming villages along the Huang He River Valley

4. People living on the Great Wall of China

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

What is the value of x in the following equation? -3x-2=2x+8

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.