Answer:
Commutative Property of Multiplication
I hope this helps you :D
Answer:
(-1, -2)
Step-by-step explanation:
The solution of the equation is the point where the two lines intersect or meets.
(-1 , -2) is the point of intersection and this is the solution
Answer:
Step-by-step explanation:
If -11i is a zero, its conjugate also is a zero, so the zeros are:
7, 11i and -11i.
So we can write the third degree function as:
If the function has a value of 663 when x = 10, we have:
So the function is:
If you are looking for x the answer would be -3 because 2•-3=-6. -6+12=6
Hope this helps!
Answer:
Step-by-step explanation:
In statistics, whenever full population cannot be surveyed, a random sample can be taken and from the observations population behaviour can be estimated.
Here given that there are 200 members. Instead of collecting data from all 200, 20 members are randomly taken.
The sample mean x bar can be estimated to give an idea the population mean also.
ACcording to central value theorem, means of different samples will follow a distribution with mean = population mean and std deviation = std dev of sample/square root of n
Hence we fix confidence interval as Mean + or - Z critical * std error
This gives us an idea about within which means will lie for different samples and hence give an idea about population mean also.
