Complete the equation. Answer as a fraction in its simplest form. 9xy * (2/3x)*3 = ( [ ] a0 / [ ] a1 ) x*4y

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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.

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red