Answer: Leticia won the first round
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Your teacher is basically asking "which value is further from zero on the number line?". The value -19 is 19 units away from zero; while 21 is 21 units away from zero.
See the attached image below. Each "space" is a distance of 1
Absolute value measures distance along the number line. Distance is never negative. In terms of notation, you would say
|-19| = 19 and |21| = 21
The outputs 19 and 21 are then compared. We see that 21 is larger, so therefore, Leticia has the higher score and she won the first round.
It will be 80 because 80/4=20 and 20+80=100
Parallel lines are those on a plane that do not intersect while perpendicular lines are those that intersect at an angle of 90°.
<h3 /><h3>How are parallel and perpendicular lines different?</h3>
Parallel lines will never intersect with each other and will maintain the same distance from each other for as long as they are on the same plane.
Perpendicular lines on the other hand will intersect each other and will do so at a 90° angle. An example of such a line is the steps on a ladder which intersect the beam at a 90° angle.
Find out more on parallel lines at brainly.com/question/24607467.
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