Answer:
12 - x
Step-by-step explanation:
y = -x + 12
Replace x with y.
x = -y + 12
Solve for y, x = -y + 12
= 12 - x
Hope this helps, please mark brainliest if possible. :)
The answer is 2/9. you just cross multiply then multiply straight across
Answer:
The number they would count is 
Step-by-step explanation:
One mole is equal to 6.02214076x10^23 particles. In order to know the number counted by every human on Earth we simply multiply the number of humans times the count a "good counter" can achieve, 4x10^9x7.44x10^9 (for USA, change to 4x10^12 if you use de British English definition). Thus:

Multiply 7 by 100 to get percentage and the multiply the number
ANSWER
Explicit formula:

Recursive

EXPLANATION
The first term of the sequence is

The common difference is


The nth term is given by the formula,



The explicit formula is;

The recursive definition is
