A. Which sequence is a geometric sequence?
b. Which sequence is an arithmetic sequence?

A. a. 80, 40, 20, 10, … b. 5, 10, 15, 20, …
B. a. 2, 4, 6, 8, 10, … b. 1, 3, 9, 27, …
C. a. −12, −6, 0, 6, … b. 2, 4, 8, 16, …
D. a. 10, 7, 4, 1, −2, … b. 4, 20, 100, 500, …

A. a. 80, 40, 20, 10, … b. 5, 10, 15, 20, …

Step-by-step explanation:

a. 80, 40, 20, 10, …

Common ratio of ½

b. 5, 10, 15, 20, …

Common difference of 5

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.