twice a number is more than the sumof that number and 9

Question

twice a number is more than the sum of that number and 9

Answer 1

Elizabeth,

     1.  Underline key words and numbers in the story problem.

 

Let "X=the number."

 

         2X                    >                       X+9

Twice a number is more than the sum of that number and 9.

 

1.  Now solve for "X."     Subtract the "1X" from both sides of the inequality. 

   

2X > X+9

 

 

2.  Now you can finish the problem.

 

If I have helped you, please give me a thumbs up.

 

                                                             Susan C.

 

Answer 2

Hi Elizabeth,
Step One: We can solve this inequality by translating the question. Assuming that the number is x:
"twice a number" means 2x
"is more than" means >
"the sum of that number and 9" means x+9
Step Two: Create the inequality
2x>x+9
2x-x>9
x>9
Best,
Star

Answer 3

Hi Elizabeth, 

Step One: We can solve this inequality by translating the question. Assuming that the number is x:

"twice a number" means 2x

"is more than" means >

"the sum of that number and 9" means x+9

Step Two: Create the inequality

2x>x+9

2x-x>9

x>9

Best, 

Star

Answer 4

This is what we have:

2n > n + 9

 

What we need is to isolate n. Let's get the variables all on one side. Subtract n from both sides:

2n - n > n + 9 - n

n > 9