Ask your own question, for FREE!
Mathematics 17 Online
OpenStudy (anonymous):

3(w+3)<9-3w

hartnn (hartnn):

whats your attempt ?

OpenStudy (anonymous):

Try distributing the \(3\) into \((w+3)\) and then collect like terms

OpenStudy (anonymous):

3w-9<9-3w

OpenStudy (anonymous):

Or is it +9 on the left

hartnn (hartnn):

3(w+3) gives out 3w+9 :)

OpenStudy (anonymous):

sorry it's supposed to be -3(w+3)<9-3w

hartnn (hartnn):

thats would give out -3*w -3*3 = .... ?

OpenStudy (anonymous):

So it's all real numbers

hartnn (hartnn):

what did u get in the end ? -9<-9 right ?

OpenStudy (anonymous):

yeah

hartnn (hartnn):

is that true ?

hartnn (hartnn):

i mean is -9 less than -9 ?

OpenStudy (anonymous):

No

hartnn (hartnn):

correct, its False so for no value of w , would you get 3(w+3)<9-3w which means there is NO soultion

hartnn (hartnn):

got that ? doubts ?

OpenStudy (anonymous):

3w-9<9-3w but this is the same so it would be all real numbers

hartnn (hartnn):

want to try a value ? 0 is a real number, right ? what u get if you put w=0 ?

hartnn (hartnn):

oh wait, my bad you would have gor -9<9 actually! right ?

hartnn (hartnn):

**got

OpenStudy (anonymous):

yes:)

hartnn (hartnn):

-3(w+3)<9-3w -3w -9 <9-3w -9<9 which is aleays true!

hartnn (hartnn):

**always so yes, the solution is all real numbers :)

OpenStudy (anonymous):

How would you solve |b|=2/3

hartnn (hartnn):

ok, when |x| =y then x=y or x=-y so what about |b| =2/3 ?

OpenStudy (anonymous):

b=2/3,−2/3

hartnn (hartnn):

correct! :)

OpenStudy (anonymous):

ok Thanks:)

hartnn (hartnn):

welcome ^_^

OpenStudy (anonymous):

My paper says to graph. How in the world would I graph It's an equation not an inequality

hartnn (hartnn):

graph of |b| =2/3 ?

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

Is that possible

hartnn (hartnn):

well, yes those are just 2 points 2/3 and -2/3 so you plot (2/3,2/3) and (-2/3,2/3)

OpenStudy (anonymous):

Thanks

hartnn (hartnn):

welcome again :)

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!