How do you turn -13 into an improper fraction

To turn any integer into an improper fraction, put the number over 1.

-13= -13/1

Final -13/1

One unique triangle, because those angles add up to 180, and that's how many degrees there are in one triangle.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?