Read the proof. Statement Reason Given: AE 1 EC; BD 1 DC 1. AE IECBDI DC 1. given Prove: AAEC - ABDC А 2. ZAEC is a rt. Z; ZBDC 2. definition of is a rt. Z perpendicular 3. ZAEC ZBDC 3. all right angles are congruent 4. ? 4. reflexive property 5. AAEC - ABDC 5. AA similarity theorem. What is the missing statement in step 4? B E C D OLACE - ZBCD ZEAB ZDBC O ZEAC ZEAC O Z CBD ZDBC

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle