Pretty sure it is C because it it divisible by 3. If you divide 15 you get 5 and if you divide 6 you get 2.
Answer:
if we bring a burning matchstick close to a source of carbon dioxide the flame presents in the matchstick will extinguish due to the lack of oxygen which one of the components of the fire triangle
C. Andrew Johnson
Andrew Johnson was the seventeenth president of the US and followed Lincoln after his assassination. He was a Democrat and as vice president offered a good bridge to the South as the Civil War was ending but as president he was not trusted by the Republicans.
Andrew Johnson pardoned Confederate leaders, allowing them to keep their land and sometimes positions in society. He provided an easy path back into the Union and did not protect blacks from the growing power of groups like the Ku Klux Klan. Johnson vetoed a civil rights act that would have prevented segregation and violence against former slaves. His policies would convince Republicans that they would have to take Reconstruction over in Congress.
Johannes Gutenburg created the printing press during the renaissance. It was important because it made the mass production of printed materials possible. It also lead to a much wider dissemination of knowledge and literacy throughout the socioeconomics classes.
We are given an arithmetic sequence with
First term, a₁ = 6
Second term, a₂ = 2
Therefore the common difference is d = -4.
The n-th term is

Answer:

all integers where n ≥ 1