Answer:
9) 130° (vertical to 130°)
10) 50° (supplementary to 130°, 180° - 130° = 50°)
11) 130° (alternate exterior to 130°)
12) 130° (vertical to 130°)
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
=3a + a + 2a - 5a
=4a - 3a
= a
hope it helps u tate!
8x²-18xy-5y²
8x²+2xy-20xy-5y²
2x(4x+y) -5y (4x+y)
= (2x-5y) (4x+y)
9: B right
10: C obtuse
11: B right
12: B right
I hope they are right! Sorry if they are not!