SOLUTION: My problem is 43>-4y+11 32>-4y y<-8 but when I check the answer in the problem it doesn't work. example: 43>-4(-9)+11 43>36+1

Algebra.Com
Question 780320: My problem is 43>-4y+11
32>-4y
y<-8
but when I check the answer in the problem it doesn't work.
example: 43>-4(-9)+11
43>36+11
43>47 What am I doing wrong?
Found 2 solutions by solver91311, oscargut:
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


What you did wrong was to fail to reverse the sense of the inequality when you divided by the negative coefficient on . Everything else you did was correct, so your answer should have been .

Remember, you have to reverse the sense when you multiply/divide by a number less than zero. Think about this example: Two is certainly less than three, right? So:



Now multiply by -1:



Needs the opposite inequality sign, right?



John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism
Answer by oscargut(2103)   (Show Source): You can put this solution on YOUR website!
My problem is 43>-4y+11

32>-4y (ok)

y<-8 (here is the mistake)
You must change < by >
y > -8
If you have more questions i can see them if you contact me at: mthman@gmail.com
Thanks


RELATED QUESTIONS

I cant find the answer to this, is it a contradiction maybe? Or unsolvable?... (answered by checkley71)
I need help solving a linear system problem using linear comblinations. The problem is... (answered by nyc_function,richwmiller)
CAN SOMEONE HELP ME WITH THIS PROBLEM WHEN I CHECK IT THE ANSWER DOESN'T MATCH:... (answered by ilana)
My problem is about Addition Methods but I couldn't find it up there so I put here ok so (answered by Alan3354)
1. 4y-9=15 2. 6x+7=-5 3. -9t+2=56 4. -69=7v-6 5. 35=-2x-15 6. 4-3n=43... (answered by jim_thompson5910)
SOLVE THE EQUATION ALGEBRAICALLY. CHECK SOLUTION BY GRAPHING. #38 X^2-11=14 #42... (answered by MathLover1)
I have been working on this problem forever and can not come up with the answer in the... (answered by khwang)
Please help me solve this: The width of a rectangle is 3 less than twice the length... (answered by jim_thompson5910)
Graphs/81664 (2007-05-11 11:05:43): I can't seem to fully understand how to get through... (answered by jim_thompson5910)