If u=< -4,8> and v=< -7,5> , v-5u= ? and ||v-5u|| is approximately?

What is the product? (x2+3y+7) [yy+1)

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

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.