Can somebody please check my work? I need a second opinion to make sure it's correct. :) I will medal

Question

anonymous · Answer

Sure, post it.

ms-brains · Answer

I didn't show the work, but if that is a problem It will take me longer to copy it from my paper on here.

atsie · Answer

Its right :)

anonymous · Answer

Correct. $5^2+4=29$ and $6\times5-1=29$

ms-brains · Answer

I have 4 practice problems that need checking. :)

anonymous · Answer

Incorrect. $5\times(-6)<6\times(-6)+6$ so $30 < 30$ which isn't true.

atsie · Answer

From the way I see it, m > - 6. After rechecking it again

anonymous · Answer

To solve this, simplify the inequality. $5m<6m+6$ so $-m<6$ so $m > -6$. THe only answer satisfying that is -5.

ms-brains · Answer

Yeah, That is what I got too m > -6 
How can it be -5?

anonymous · Answer

Because $-5>-6$

mathmale · Answer

Please note:  You can check your own answers in questions of this type by substituting your "solution" into the original equation.  if that equation come out "true," your "solution" is correct.  Try to avoid dependence on other people to check your results.

ms-brains · Answer

Alright. Thank you.

Next one..

anonymous · Answer

Correct.

atsie · Answer

if it helps any, the alternate solutions for problem number two are
m + 6 > 0
and
5m < 6 (m + 1)

and I'm going to stay away from number three because i myself am unsure of that one. Sorry about that.

ms-brains · Answer

Last one And I am not sure on this. I think it is B..

anonymous · Answer

$$5x-15y=20$$$$5x=20+15y$$$$5x-20=15y$$$$\frac{5}{15}-\frac{20}{15}=y$$
Can you simplify this and see which answer it is?

anonymous · Answer

That last one should be 5x/15. Sorry.

ms-brains · Answer

x-4/3

mathmale · Answer

If you know you can check your own work, then why are you still asking others to check your work for you?  What will you do during a test, when you have no one to do that?

anonymous · Answer

Try again$$y=\frac{5x}{15}-\frac{20}{15}$$

ms-brains · Answer

I have no idea. Everything I solve it to is incorrect. ;-;

anonymous · Answer

How can you simplify $\frac{5}{15}$ and $\frac{20}{15}$?

ms-brains · Answer

Simplify 5/15 to 1/3 and work from there..

ms-brains · Answer

5/15 - 20/15 would = -1

ms-brains · Answer

@tom982  You there?

ms-brains · Answer

Is it A...?

anonymous · Answer

Close, but you can't just lose the x,
$y=\frac{5}{15}x-\frac{20}{15}=\frac{1}{3}x-\frac{4}{3}$

ms-brains · Answer

It's C!

ms-brains · Answer

y=1/3 x - 4/3