Answer:

Step-by-step explanation:
y = 18 + 3x²
- 18 - 18
__________

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Answer:
0
Step-by-step explanation:
Answer: A
Step-by-step explanation:
If you flip the second triangle straight upwards so that x is on top and z,y are on the bottom, you could visualize the points and angles in the same locations.
Answer:
40%
Step-by-step explanation:
12 divided by 30 will give you 0.4