In an arithmetic sequence, the seventh term is −9 and the nineteenth term is 39. Find the common difference. Give only the exact value as your answer.

37.5% that is the answer

Step-by-step explanation:

b, i believe, but not sure.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.