Answer:
A. the difference of two squares
Step-by-step explanation:
Please use the symbol " ^ " to indicate exponentiation.
Then we have x^2 - 11^2, which is the difference of two squares:
x^2 is a square, the square of x; and 11^2 is a square, the square of 11.
A. the difference of two squares
Note that a "difference of squares" is easily factored:
a² - b² = (a - b)(a + b)
and so your x² - 11² factors as follows: (x - 11)(x + 11)
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-
, where 
= Population standard deviation.
n= sample size
= Sample mean
z* = Critical z-value .
Given : 
n= 49
Two-tailed critical value for 95% confidence interval = 
Then, the 95% confidence interval would be :-
Hence, the 95% confidence interval for estimating the population mean 
:
Are you given an equation?
Answer:
535.07
Step-by-step explanation:
S=P(1+ i) ^n
i= nominal rate of interest / number of compounding periods
i =. 06/12
=0.18
Divided by 100
=0.0018
n- number of times interest is given per year x the number of years
n=12x3
=36
8000(1+0.0018)^36
=8535.07
Interest
8535.07 - 8000
=535.07
