Which method should be used to solve for x? 2.5x = 5.7 a. distributive property b. addition property of equality c. combining like terms d. division property of equality

One integer is 8 times another. if the product is 72, then find the integers

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.

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents