Pleaasse I really need help on this question

first of all wow this is not the easiest. But i figured out some of it i hope this helps! :)

Step-by-step explanation:

100 cm=1 m

20 cm=30

1 m=2 hr and 30 minutes

for the prism i know what is missing( .80) is missing for the side. I really hope this helps i am sorry i could not figure out the rest.

  n=   0.0000 - 0.3750 i  

  n=   0.0000 + 0.3750 i

step-by-step explanation:

one of these should be correct

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)