solution a is 10% alcohol. solution b is 60% alcohol. how much of each is needed to make 50 l of a solution that is 30% alcohol

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Can someone me with this problem . show your work .

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.