Answer: 1 brain
Step-by-step explanation:
If one person has a brain, the number of brains they have, x, is 1.
Then, upon giving a brain to another person, x decreases by 1, becoming 0.
Then, when given a brain, x increases by 1, settling at 0.
Hope it helps :)

Answer: 39 degrees
Step-by-step explanation:
Since the triangle is a right angle
The sum of angles in a right angle is 90degrees
51degrees + A= 90 degrees
A= 90degrees - 51 degrees
A=39 degrees
Answer:
True!
An irrational number has an infinite number of decimal places.
If the decimal ever ended, then the number would be rational.
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
its what you multiply by to get the next number
You are correct. The higher the standard deviation is, the more spread out the data set will be. Nice work.