Answer:
24 ways
Step-by-step explanation:
Given that
Number of students = 4
Lecturer have to stand in the middle position.
We have five places in which middle place is for lecturer,now we have four places and we have to arrange four students on that four places.So there will 4! ways to arrange those students.
4!= 4 x 3 x 2 x 1
4! =24
So we have 24 ways to arrange 4 students and one lecturer .
Answer:
2 3/4
7 9/16 ÷ 2 3/4 = 2.75
so 2.75 as a fraction is 11/4
then we simplify 11/4= 2 3/4
-2m-2=10
-2m=12
m=-6,
or
m+1=-5
m=-6
