-5 < z + 1 <= 1, 7 > a - 3 > 4, -3 > 2b - 9 > -7, 13 <= 5c +

[lovezoey101]

i have a really bad teacher for algebra 2 and this is supposed to be algebra 1 stuff that i learned 2 years ago.
please help!

1) -5<z+1 less than or equal to sign 1

2) 7>a-3>4

3) -3>2b-9>-7

4) -13 less than or equal to sign 5c+2>12

5) -9>2/3j-11 greater than or equal to -15

6) 8<5-3w less than or equal to sign 14

7) r-3<1 or r is greater than or equal to sign 3

 

[Loren]

Re: help please!!

Yes. This is Algebra I stuff. I'm sorry that you have a really bad teacher this year. I guess you get stuck with really bad teachers since the one you had in Algebra I didn't seem to get the idea across to you.

1) -5<z+1 less than or equal to sign 1

-5 < z+1 < 1

You want to isolate the z, so subtract 1 from each expression in the inequality.

-5-1 < z+1-1 < 1-1

-6 < z < 0

You treat inequalities exactly the same as you would an equation EXCEPT when you multiply or divide by a negative number you must change the sense of the inequality --- that is a < becomes a > and a > becomes a <.

For further instruction, you might google "inequalities" and see what comes up.

 

[lovezoey101]

Re: help please!!

thank you so much!