Total no. of students - 140 students
Total no. of students from all schools= 140+70+35+105=350
school A= 140÷350×100=40./. (multiplying by 100 because it's the total percentage )
School B = 70÷350×100=20./.
School C = 105÷350×100=30./.
School D = 105÷350×100= 10./.
Consisting all the schools percentage it gives 100./.
Hope this helps
Please look at the picture. If you can't see it, I'll write it out for you.
Question 1: Option B: 
Question 2: Option D: 
Solution:
Question 1:
The point on the given line are (2, 4) and (4, –2).
Slope of the given line:


m = –3.
Slope of perpendicular line = –1 ÷ Slope of the given line
Slope of perpendicular line = 
Perpendicular line passing through the point (3, 1).
Slope -intercept form using point slope formula,




Option B is the correct answer.
Question 2:
The point on the given line are (0, –3) and (2, 3).
Slope of the given line:


m = 3.
Slope of parallel lines are equal.
Slope of parallel line =3
parallel lines passing through the point (–1, –1).
Point slope formula:


Option D is the correct answer.
Answer:
60
Step-by-step explanation:
SEE THE IMAGE FOR SOLUTION
HOPE IT HELPS
HAVE A GREAT DAY
Add the equations together:
12x-12x-11y-5y=40+88
you get
-16y=128
divide y=128/-16
y=-8
then plug-8 for y back into either equation.
12x-11(-8)=88
12x+88=88
12x=0
x=0