SOLUTION: Hi! I need someone to please check my work on this. X=4, Y=-3, and Z=2 1. Is 3x-2y+z>(or equal to)19? 3(4)-2(-3)+2>(or equal to)19 12(-6)+2>(or equal to)19

Algebra ->  Systems-of-equations -> SOLUTION: Hi! I need someone to please check my work on this. X=4, Y=-3, and Z=2 1. Is 3x-2y+z>(or equal to)19? 3(4)-2(-3)+2>(or equal to)19 12(-6)+2>(or equal to)19       Log On


   

Question 65042: Hi! I need someone to please check my work on this. X=4, Y=-3, and Z=2
1. Is 3x-2y+z>(or equal to)19?
3(4)-2(-3)+2>(or equal to)19
12(-6)+2>(or equal to)19
20>(or equal to)19
YES
2. Is 3(x+4y)<(or equal to)z
3(4+4(-3)<(or equal to)2
-3(4+-12)<2
-12+36<2
24<2
NO

3. Is -3(x+4y)>z
-3(4+4*-3)>2
-3(4+-12)>2
-12+36>2
24>2
YES


Found 2 solutions by funmath, ptaylor:
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
1. Is 3x-2y+z>(or equal to)19?
3(4)-2(-3)+2>(or equal to)19
12+6+2>(or equal to)19
20>(or equal to)19
YES
Correct!!!!
2. Is 3(x+4y)<(or equal to)z
3(4+4(-3)<(or equal to)2
-3(4-12)<2
-3(-8)<2
24<2
NO
Correct!!!!
3. Is -3(x+4y)>z
-3(4+4*-3)>2
-3(4-12)>2
-3(-8)>2
24>2
YES
Correct!!!
You got all the right answers, but got there wrong. I made some adjustments to the work you did.
Happy Calculating!!!

Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
Hi! I need someone to please check my work on this. X=4, Y=-3, and Z=2
GOOD WORK ON THIS ONE (1)!!!! YOU ARE RIGHT ON TARGET.
1. Is 3x-2y+z>(or equal to)19?
3(4)-2(-3)+2>(or equal to)19
12(-6)+2>(or equal to)19
20>(or equal to)19
YES

YOU NEED TO RECHECK THIS ONE (2).
IN STEP 3, WHERE DID THE -3 COME FROM
THAT CAUSED THE SIGNS IN STEP 4 TO GET REVERSED
I THINK YOU MIGHT HAVE CONFUSED THIS WITH THE NEXT PROBLEM

2. Is 3(x+4y)<(or equal to)z
3(4+4(-3)<(or equal to)2
-3(4+-12)<2
-12+36<2
24<2
NO


YOU ARE RIGHT ON TARGET WITH IS ONE (3). GOOD WORK!!
3. Is -3(x+4y)>z
-3(4+4*-3)>2
-3(4+-12)>2
-12+36>2
24>2
YES

Hope this helps. Happy holidays.----ptaylor