Answer:
209.96
Step-by-step explanation:
we know that the circumference of the circle is equal to
C = 
we have
substitute would be
assume that 
64
Answer:
y= 1/4x+5
Step-by-step explanation:
y=mx+c
to calculate gradient: change in y/change in x
-3/-12 = 0.25
y = 1/4x+c
4 * 1/4 = 1
6-1 = 5
c= 5
Totally:
y= 1/4x+5
Its 81 centimeters because you round 5 and over. So nearest centimeter means 2 whole numbers which is 81
The median is 12.
There are 23 dots.
11 on 1 side. 12. 11 on the other
11+11+1=23.
Answer:
Below.
Step-by-step explanation:
To find the number of students in each grade you multiply the marks by the frequency density. The number of students is given by the area under the rectangles.
So to find the number of students with grade U (< 160) it is:
120 * 0.2 + 40*0.5
= 24 + 20
= 44.
The number for Grade E
= (200 - 160) * 0.5
= 40 * 0.5
= 20.
The others can be found in the same way.
