The approximate populations of the three countries below are expressed in scientific notation. Lin says that more than 20 times as many people live in Thailand than in Panama. Is this correct? Explain how you know THAILAND ; 7 X 10^7 PANAMA ; 4 x 10^6 PERU ; 3.2 x 10^7

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Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

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.