Which lines are parallel? Justify your answer.
75
115
Lines a and b are parallel because their alternate
exterior angles are congruent.
Lines a and bare parallel because their same side
exterior angles are supplementary,
Lines e and fare parallel because their alternate exterior
angles are congruent.
Lines e and fare parallel because their same side
exterior angles are congruent.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

i dont know

step-by-step explanation:

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

b

step-by-step explanation:

i dont know