Answer: t = 1.9287
Step-by-step explanation:
Let 
be the average number of pages should be sent by 2-day mail instead.
As per given we have,
Sample mean : 
Sample standard deviation : s=3.81
sample size : n= 24
Since , the sample size is less than 30 and populations standard deviation is unknown , so we use t-test.
The test statistic for population mean :-
Hence, the test statistics : t = 1.9287
-2(1/2x-1)=4 distribute the -2
-1x+2=4 subtract 2 from both sides
-1x=2 divide -1 on both sides
x=-2 answer
Answer: C.
Step-by-step explanation:
Answer:
The answer to your question is Center = (-3, 5) radius = 8
Step-by-step explanation:
Data
(x + 3)² + (y - 5)² = 64
Process
Because of the characteristics of the equation, we conclude that it is a circle.
Standard form of a circle:
(x - h)² + (y - k)² = r²
In this form of the equation, the center has coordinates (h, k), just change the signs.
And to get the radius, just get the square root of r²
h = -3
k = 5
r = 8
Center = (-3, 5)
radius = 8
Answer:
Divide each term in
− 3 x = −12 by −3 and simplify. Then ur answer is x =4
