Answer:
A; C; 35; A; A,B,D
Step-by-step explanation:
1. GH = sqrt(4^2 + 6^2) = sqrt(52) = 2sqrt(13)
FG = sqrt (9^2 + 4^2) = sqrt97
Add them together, and multiply by 2 to get the perimeter (because JH = GH, and FG = FJ). You get A (4sqrt13 + 2sqrt97)
2. C, because that is basically saying that all the angles are right
3. The lines are equally spaced (horizontally), and parallel, making them increase by the same amount between each. This means that (8x-7) - (7x+2) = (7x+2) - (10x-1).
Simplify:
x-9 = -3x+3 -->
4x = 12,
x =3
This means that the parallel lines' lengths are 17, 23, 29. This means that they increase by 6. This makes the longest base 29 + 6 = 35
4. The sum of exterior angles is ALWAYS 360. Divide 360 by 18 to find out how many sides it has. 360/18 = 20. The answer is A.
5. A, B, D (Laws of Rhombuses)
