i got 28cm.... But im not sure
Answer:
The height of the objects are the same after 2 seconds.
Step-by-step explanation:
In order to calculate at which time both objects have the same height we need to find the value of t that makes both equations equal. Therefore:

The height of the objects are the same after 2 seconds.
Answer: (3, -1)
Step-by-step explanation:
Reflecting over y = -x maps
.
So, 
Answer:
vertical
Step-by-step explanation:
because 180degrees is a straight line