First, you want to divide both sides by 3 to isolate your variable. You get x^2 = 9. The square root of x^2 and 9 equals x = 3. 
x = 3 is your answer.
        
             
        
        
        
The length is 6 inches.
The width is 1 foot = 12 inches.
The perimeter is  (6 + 12 + 6 + 12) = 36 inches (3 feet) .
"14 inches" is false.
        
             
        
        
        
Answer:
the input number is -10
Step-by-step explanation:
output is always y
input is always x
so instead of y, put -52
-52=5x-2  add 2 to each side to ger 5x by itself
-50=5x     divide both sides by 5 to get x by itself
-10=x
x is the input so the input is -10
 
        
             
        
        
        
Answer:
50.40% probability that all 4 are different.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Desired outcomes:
4 digits, all different
For the first digit, it can be any of them, so there are 10 possible
For the second digit, it can be any of them other than the first digit. So there are 9 possible.
For the third digit, it can be any of them, other than the first and the second. So there are 8 possible.
By the same logic, 7 possible digits for the fourth. So

Total outcomes:
4 digits, each can be any of them(10 from 0 - 9).
So 

Probability:

50.40% probability that all 4 are different.
 
        
             
        
        
        
Answer:
2/5 (rise over run)
Step-by-step explanation: