What type of triangle is formed by joining the points d(7, 3), e(8, 1), and f(4, -1)? a .equilateral triangle b. isosceles triangle c. right triangle d. acute scalene triangle e. obtuse scalene triangle

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.

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?

Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?