Sierra walks her dog Pepper twice a day. Her evening walk was two and a half miles. At the end of the day, she tells her mom, I walked Pepper for 7 miles today!
How long is her morning walk?

Which number produces a rationale number when multiplied by 1/5

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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.