The point P(x, y) lies on the terminal side of an angle a = -60° in standard position. What are the signs of the values of x and y? Both x and y are positive.
Both x and y are negative.
x is positive, and y is negative.
x is negative, and y is positive.
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225/100 of last years cost. write each fraction as a decimal and as a percent

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

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.