Answer:
A) 4
B) 9
C) 12
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
Find S
Midpoint is calculated as:

So, we have:

<em>Where x2 and y2 are the coordinates of S</em>
Multiply through by 2



By comparison:




So:

C is the answer!! I hope this helps!!!
Answer:
3. mean of 2nd is larger
Step-by-step explanation:
mean of 2nd sem 87 > 86.8 1st sem
The answer is 12c^8/d^2 or answer A