3 years ago

What is the inequality of - r/4 < 8 sorry I couldn't put the line under the greater or less sign.

1 answer:

6 0

So -r/4<8
treat it as kind of an equal sign so do the sam eto both sides

multily both sdies by 4 to gert rid of fraciton

-r<32
multiply by -1
remember when multipy by -1 flip the sign

r>-32

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Find values of a and b that make the statement |a+b|= |a|+|b| false.

jok3333 [9.3K]

The values that make this statement falser are any in which a and b do not have the same sign.

For instance, if a was equal to 3 and b was equal to -3 than see the results.

|a+b|=

|3+-3|=

|0|= 0

Then see the next equation with the same selections

|a|+|b|

|3|+|-3|

3 + 3 = 6

And this would be true no matter which is the negative, as long as there is one negative and one positive.

3 0

3 years ago

Can someone help me with this?

Wewaii [24]

3x+4=y+5, then y+5=3x+4
It is called: reflexive property

-----------------------------

x = y and y = 10, then x = 10
It is called: equality substitution property