Will give brainliest for the right answer

find a4 in the geometric series in which s4=65 and the common ratio is r=2/3

How do you solving the solution of each system using elimination?

Give me the equations of two lines that have the same slope but are not parallel.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?