Question

Two numbers have a mean of 12. One of the numbers is 9. What is the other number? First. Answer gets brainliest only if the answer is correct .

Answer 1

Answer:

15

Step-by-step explanation:15+9/2= 12

hope this helps

Answer 2

Answer:15

Step-by-step explanation:

We know that mean means average

That is , a+b/2

Here, the mean of two numbers is 12 and it's given that one of the number is 9.

So the equation is

12=(9+b)/2

12=9/2+b/2

12-9/2=b/2

7.5=b/2

7.5×2=b

15=b

There fore, the other number is 15

I hope this helps you