AB = 1/2
BC = -2
CD = 1/2
DA = -2
Answer:
The index of refraction of the second medium is higher.
Step-by-step explanation:
Step-by-step explanation:
oi1i1iiiii1i1¹111111¹1o1ooooooo
Answer:


Step-by-step explanation:
----------- (1)
-----------(2)
Adding equation (1) and (2)


Substitute y=-4 in equation (1) or (2)


Answer:
1021
Step-by-step explanation:
1+1=2 and it needs to add up to 4 so you add in another 2 in the only place left for it to go which is in the tens place because the first and last number have to be the same and 0 has to go in the hundreds place.