Answer:
x = 3
Step-by-step explanation:
Mathematically, the mean is the sum of the numbers divided by the count of the numbers
The count of the numbers is 5
Thus;
( 4 + 8 + 9 + x + 2x)/5 = 6
(21 + 3x)/5 = 6
21 + 3x = 6(5)
21 + 3x = 30
3x = 30-21
3x = 9
x = 9/3
A. 40
Q1 - 40
Q2 - 65
Q3 - 80
And 90 is max
So 40 is the correct answer.
its D
always
3/5 = 75/x
75/3 = 25
5 x 25 = 125
3/5 = 75/125
Book has 125 pages
6 3/4 ÷ 4 1/2 = 1 1/2
1 1/2 times as long
