If the series is made up of numbers in an arithmetic progression, you have
where
is the first term and
is the common difference between terms.
Since the last term in the series is
, you have
Solve the system
and you'll find that the first term is
(with
).
Answer:
B. -10.0
Step-by-step explanation:
-10.0² = -100
thus= -10.0 is the closest to -102 (square root)
Current # of albums ÷ % = original total number of albums
=80 ÷ 48%
=80 ÷ 0.48
=166.66
***BUT since you cannot have a partial album, you need to round up to 167.
Hope this helps! :)
Answer:
m=1
Step-by-step explanation:
8m-(-6m)+(-7)=7
8m+6m-7=7
14m=14
m=1
Answer:
The 95% confidence interval is 
Step-by-step explanation:
From the question we are told that
The population standard deviation is 
The sample size is n = 20
The sample mean is 
From the question we are told the confidence level is 95% , hence the level of significance is
=> 
Generally from the normal distribution table the critical value of 
is
Generally the margin of error is mathematically represented as
=> 
=> 
Generally 95% confidence interval is mathematically represented as
=> 
=>
