Answer:
(0.5, 0.5)
Step-by-step explanation:
Use the midpoint formula: 
The points are:
Therefore, the midpoint between A and C is located at (0.5, 0.5).
Answer:
4 and 6.
Step-by-step explanation:
There are 4 different grades represented, so for the first question, there are 4 ways that the students can sit if they must sit together by grade.
For the second question, there are 3 grades other than senior level, so it starts with 3 ways that the students can be seated. 3 ways x 2 students per way = 6 ways
From symmetry of sin(x) about pi/2, we know that sin(x)=sin(pi-x).
Therefore
sin(x)+sin(pi-x)=sin(x)+sin(x)=2sin(x).
8.00*25.00*23.00=? (Zeros not necessary; needed to fill character requirement).
