Is 0.7777... (REPEATING) rational or irrational? (NEED AN ANSWER ASAP)

Which of these explains why:

A.)It is the square root of a non-perfect square

B.)It is a decimal that repeats

C.)It is a decimal that terminates

D.)It is the square root of a perfect square

E.) It is a decimal that does not repeat or terminate

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Find the value of x in the diagram below. select the best answer from the choices provided

Ethan is proving that the slope between any two points on a straight line is the same. he has already proved that triangles 1 and 2 are similar. drag statements and reasons to complete the proof.