Question

Which of these inequalities are equivalent to r > -11? Check all that apply.

-r < 11
3r < -33
3r > -33
-3r < 33
-3r > 33

Answer 1

1st one: (does apply)
-r < 11

-r / -1 > 11/-1

r > 11


2nd one: (doesn’t)
3r < -33

3r/3 < -33/3

r < -11


3rd one: (does)
3r > -33

3r/3 > -33/3

r > -11


4th one: (does)
-3r < 33

-3r/-3 > 33/-3

r > -11


5th one: (doesn’t)
-3r > 33

-3r/-3 < 33/-3

r < -11

Answer 2

iits A,C,D

Explanation: