The square root of a whole number will be rational if the whole number is a perfect square (i.e 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144 etc) and irrational otherwise.
Rational number is a number that can be described as m/n 
so a fraction can be a rational number, 0.8=4/5 
Irrational numbers can't be written as a fraction 
The part about the number having to be a perfect square is still correct, if it's not a prefect square than it will just keep going(a decimal that never ends) 
for example the square root of 0.64 is 0.8 
and the square root of 10 is 3.162277... 
as you can see the 0.64 one ends and is rational, whereas the 10 one just keeps going and is irrational.
        
             
        
        
        
35%
Explanation:
The overall percentage must add up to 100%
Because of this...
100% (total) - 49% (swimming) = 51%
51% - 16% (biking) = 35% (rollerblading)
        
                    
             
        
        
        
Answer:
x > -6.
Step-by-step explanation:
16x - 33x < -12x + 30
Add 12x to both sides:
16x - 33x + 12x < 30
-17x + 12x < 30
-5x < 30
x > 30/-5 
x > -6
(Note the inequality signs flips because we are dividing by negative 5).
 
        
             
        
        
        
Answer:
x=2
Step-by-step explanation:
4x=8 
4x/4= 8/4 Divide both side by four to find x
8/4= 2 which equals x
 
        
                    
             
        
        
        
{0, 2, 1/2}
f(h) = 0 when any set of parenthesis equals zero
1. h = 0
2. h - 2 = 0
add 2
h = 2
3. 2h - 1 = 0
Add 1
2h = 1
divide by 2
h = 1/2