Answer:
It is an example of commutative property
Step-by-step explanation:
Answer:
Option D. a^2+6ab-2ba
Step-by-step explanation:
Option D because we have like terms: 6ab and -2ba=-2ab, then
a^2+6ab-2ba=a^2+6ab-2ab
Simplifying on the right side of the equation adding like terms:
a^2+6ab-2ba=a^2+4ab
Answer:
The probability is 
Step-by-step explanation:
From the question we are given that
The population mean is 
The standard deviation is 
The random number 
The sample size is 
The probability that the sample mean would be greater than 
Generally the z- score of this normal distribution is mathematically represented as

Now

substituting values


Which implies that


Now from the z-table the probability is found to be

In 12 weeks as the lowest common number between them is 12
4+4+4=12
3+3+3+3=12
2+2+2+2+2+2=12