Since BD and AC are diagonals of rectangle ABCD . ..hence they are equal..
AC = BD
3x+4 = 5x-50
2x = 54
x = 27
Answer: 0
You are subtracting each value by itself so there would be nothing left. If it were addition then that would be different
Answer:
Your answer would be C)1,350 mm
Step-by-step explanation:
face area = (15 mm)² = 225 mm²
cube area = 6 × face area = 6×225 mm² = 1350 mm²
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.
