Answer:
The main reason it was important to study this group was:
1) If Whitehead had found that many people had drunk water from the Broad Street pump and not caught cholera, that would have been evidence against Snow's hypothesis.
Step-by-step explanation:
But Dr. John Snow was able to convince many councillors who ensured that the pump handle was removed from the Broad Street pump. Within a few days of this removal, the cholera epidemic ended. This step proved that Dr. Snow was right from the beginning. The pump handle was the means that the cholera epidemic was being spread from one person to another within Broad Street area, since many usually fetch water from the pump.
A.
It is going up as you go right so it is positive and they are pretty much clumped up in a line.
Since the problem states "a number" and again "a number", I assume it;'s the same number. Let the number be x.
12x - 9x = 3x
The difference of twelve times a number and nine times a number is three times the number.
Answer:
B
Step-by-step explanation:
1. Given mathematical statement
So,
2. Rewrite it as
So,
3. Combine like terms 
and 
So,
4. Add to both sides:
So,
5. Subtract 3 from both sides:
So,
6. Divide both sides by 5:
So,
That answer was (B)................
