## iloveboys Group Title Evaluate 2x - y - z when x = -2, y = 3, and z = -2 Answer -9 9 5 -5 2 years ago 2 years ago

1. iloveboys

Help

2. davian

is -5 ur answer?

3. iloveboys

Im not sure what my answer is.

4. iloveboys

??

5. across

Plug the numbers in:\[2x-y-z,\]\[2(-2)-(3)-(-2),\]\[-4-3+2=-5.\]

6. davian

ohh well you can plug in what you know soo \[2(-2) - (3) -(-2)\]

7. davian

then just solve and you get -5

8. iloveboys

Thanks.. couldu help me with anothor?

9. iloveboys

Evaluate x - 2y when x = 3 and y = -2 Answer -7 1 -1 7

10. davian

its 7

11. TuringTest

@davian we are trying to teach here, not give answers...

12. TuringTest

look at what across did above Evaluate means "plug in" the numbers (values) given for each letter (variable) so put 3 where the x is and put -2 where the y is tell me what you get

13. davian

\[3-2(-2) gives you 3-(-4) =7\]

14. TuringTest

"Evaluate x - 2y when x = 3 and y = -2" I'm guessing it's the terminology that is throwing you off "Evaluate" means put the given numbers in there proper place. if x=3 put a 3 where the x is if y=-2 put a -2 where the y is show me what you get just by doing that, don't try for the final answer right away. step-by-step, remember?

15. knight231

can you guys help me with this one ? Evaluate x(–y + z) for x = –1, y = 2, and z = 5.

16. across

@knight231, you just necro'ed a year old question to post a one liner?

17. TuringTest

testing....