1. Write an equation for the nth term of the Arithmetic sequence. Use the Formula: an = a + (n - 1)d
2. Identify if the given sequence is Arithmetic, Geometric, or neither.
20, 15, 10, 5

Find the solutions for a triangle with a =16, c =12, and b = 63º

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).