Answer: 5 dots should be placed on value 2.
Step-by-step explanation:
Step by step explanation:
X + y=25
-y. -y
X=25-y
3x +4y= 90
3(25-y) =90
75-3y=90
-75. -75
-3y =15
/-3. /-3
Y=-5
X=25-(-5)
X= 25+5
X=30
That is the pH scale
pH = - log of the concentration of hydrogen ions in a solution.
The correct answer is 50%.
Approximately the middle 50% of data is contained inside the box of a box plot.