The length of the rectangle is n-3, ok, the width is 2
the area of a rectangle is just length * width
so, if you simplify either of those, you'd end up with 2n-6.
because same/same = 1, and 1 * anything, is just anything itself.
Answer:
x<《-4,12》
Step-by-step explanation:
inequalities:
x-4<8, x-4>0
-(x-4)<8, x-4-<0
intersections:
x<12, x>4
x>-4, x<4
x<[4,12》
x<《-4,4》
x<《-4,12》
Answer:
-1/12
Step-by-step explanation:
change divide sign to multiply by reciprocating
Answer:
His 95% confidence interval is (0.065, 0.155).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
For this problem, we have that:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
His 95% confidence interval is (0.065, 0.155).
I think it would be 324 divided by 4 = 81 in.
