Answer:
9
Step-by-step explanation:
-y + 9x = 0
y = 9x
y = kx
k = 9
Answer:
b 19.2
Step-by-step explanation:
a = 
for a circle. We do not want to find the area for a whole circle. We only want to find the area for part of a circle. a hole circle is 360 degrees.
a = 
a = (
)
a = 19.2 rounded.
Answer:
a) 320 students
b) 25 students
Step-by-step explanation:
Number of 18-years old in the survey:
(We add all frequency points for each line)
0 + 30 + 20 + 60 + 70 + 40 + 60 + 40 + 0 = 320 students
Number of 18 year old spending between 25 and 35 minutes: 40 + 65 = 105
Number of 12 year old spending between 25 and 35 minutes: 30 + 50 = 80
105 - 80 = 25 students
Answer:
Step-by-step explanation:
Circumference of the column 
Circumference of a circle
Therefore:
Area of a Circle 
Since radius of the cross section of the column =9 meters
Area of the cross section of the column
Weird. I think you just need to look if the point falls on the shaded area. But only (-5,5) does ...
