B because 67 is not equal to 96
E because 67 is less than 96
Answer:
The nth term is given by: 
The 30th term is 78.
Step-by-step explanation:
Arithmetic sequence:
The nth term of an arithmetic sequence is given by:
In which 
is the first term and d is the common difference between terms.
-9, -6, - 3,0
This means that 
. So
30th term:
The 30th term is 78.
Complementary angles add up to 90 degrees.
If you know one angle subtract that from 90 to find the other angle.
Supplementary angles add up to 180 degrees.
If you know one angle, subtract that from 180 to find the other angle.
Answer:
The standard error for the mean finish time of 30 randomly selected participants is 0.055 hours
Step-by-step explanation:
Standard error = sample standard deviation ÷ sqrt (sample size)
sample standard deviation = 0.30 hours
sample size = 30
standard error = 0.30 ÷ sqrt(30) = 0.30 ÷ 5.477 = 0.055 hours
