200=12th grade for riverside high school.
500=total for that school
200/500=
2/5=
0.4
It is true. Perpendicular lines are what we call to two lines that intersect together forming a right angle or an angle measuring 90 degrees. You can easily determine this if you see a horizontal and a vertical line intersect together.
Answer:
-4
Step-by-step explanation:

but there is a negative sign so -4