Margarete comprou um saco de batatas pesando 12 quilogramas. Deu um sexto à sua irmã. Quantos quilogramas de batatas recebeu a irmã de Margarete? AJUDA É PRA HOJE!

Could someone with number 1 and 2

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.

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.