Answer:
decrease of 5%
Step-by-step explanation:
always start of by finding 10% which would be 100 students
1000-100=900
you would still have 50 students left
half of 100 is 50 so half of 10% is 50 students
5%=50 students
Answer:x=3 y=1/2
Step-by-step explanation:
x+2y=4
2x-2y=5
Add both equations together
x+2x+2y-2y=4+5
3x+0=9
3x=9
Divide both sides by 3
3x/3=9/3
x=3
Substitute x=3 in x+2y=4
x+2y=4
3+2y=4
Collect like terms
2y=4-3
2y=1
Divide both sides by 2
2y/2=1/2
y=1/2
