Answer:
I think it's 45 students
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
If the three points are collinear
then

we have
A (1, 2/3), B (x, -4/5), and C (-1/2, 4)
The formula to calculate the slope between two points is equal to

step 1
Find the slope AB
we have

substitute in the formula



step 2
Find the slope AC
we have

substitute in the formula



step 3
Equate the slopes


solve for x





simplify

Answer:
radius= diameter/2= 10/2
*radius=5
circumference= diameter*pi=10*3.14
*circumference=31.4
Step-by-step explanation: hope this helps