Question

PLEASE HELP!

Which of these inequalities are equivalent to r > -11? Check all that apply.
-r < 11
3r < -33
3r > -33
-3r < 33
-3r > 33

CHECK ALL APPLY

Answer 1

r > -11 /multiply by -1
-r < 11

-r < 11 /multiply by 3
-3r < 33

r > -11 /multiply by 3
r > -33

Answer 2

Option 1,3 and 4

Explanation:

Given : Inequality
`r > -11`.

To find : Which of these inequalities are equivalent ?

Solution :

Inequality
`r > -11` ....(1)

Multiply (1) by -1,

`-r < 11`

So, option 1 is equivalent.

Multiply (1) by 3,

`3r > -33`

So, option 3 is equivalent.

Multiply (1) by -3,

`-3r<33`

So, option 4 is equivalent.

Therefore, option 1,3 and 4 are equivalent to given inequality.