An ellipse is represented by the equation (x-5)^2/625+(y-4)^2/225=1.

Each directrix of this ellipse is a from the center on the major axis.

a) horizontal line that is 20 units
b) vertical line that is 20 units
c) horizontal line that is 31.25 units
d) vertical line that is 31.25 units

In trapezoid bath, ah=19.7 and et=16.1. identify be.

Can someone pls ! pls answer all. no explanation needed..

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.