Evaluate the expression below for x = 1, y = –2, and z = 3.
http://media.education2020.com/evresources/2003-01-03-00-00_files/i0130000.jpg

Question

Evaluate the expression below for x = 1, y = –2, and z = 3. 
http://media.education2020.com/evresources/2003-01-03-00-00_files/i0130000.jpg

austinl · Answer

$\dfrac{3x-2y}{z+4}$

$z=1\
y=-2\
z=3$

Plug the values in and evaluate.

hba · Answer

$$x=1$$

hba · Answer

Now just plug in the values of x,y and z :)

austinl · Answer

Sorry.... typo.... :$

anonymous · Answer

-12?

austinl · Answer

$\dfrac{3(1)-2(-2)}{3+4}=~?$

anonymous · Answer

1/7

austinl · Answer

What is 3(1)?

anonymous · Answer

it said the right answer was -1/7

austinl · Answer

What......
$\text{We have} \dfrac{3-(-4)}{7}=\dfrac{7}{7}=1$
How on earth do they get $-\dfrac{1}{7}$

anonymous · Answer

thats what they said

anonymous · Answer

it was - 1/7 i was confused and put in 1 but it said it was that

austinl · Answer

Ok, I was gonna say... your homework system is wrong :P
But all is well.

anonymous · Answer

have you copied the question correctly 
I think value of y=2

austinl · Answer

She put in 1 and it said it was correct.

anonymous · Answer

no i put 1 and it said it was wrong

austinl · Answer

What the actual...... either there is a typo in the question, or your homework system is wrong.

anonymous · Answer

i think it might be wrong cause this has hppen a cople of times that why i have people check my question

anonymous · Answer

Yeah I think @austinL has done the question correctly

anonymous · Answer

thank you all for the help i will tell my teacher about this :)

austinl · Answer

No problemo. :)