Which of the following is a trinomial with a constant term? a) y^5 b) -x+y^10 c) x+4y+7 d) x^3+11x^2+x

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

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.

What is negative 3/9 times negative 2/8 ?