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Mathematics 14 Online
OpenStudy (anonymous):

is the following inequality always, sometimes or never true? 2(8x-4)-2x<14x+12 please answer :)

OpenStudy (anonymous):

So we have \[2(8x-4)-2x\lt14x+12\] We need to isolate for x

OpenStudy (anonymous):

So you can expand it to: \[16x-8-2x\lt14x+12\] So now you need to group like terms. So \(x\)'s with \(x\)'s and numbers with numbers. What do you get?

OpenStudy (anonymous):

idk help

OpenStudy (anonymous):

Well it works like this: \[14x-8\lt14x+12\] \[14x-14x\lt12+8\] \[0(x)\lt20\] \[x\lt\frac{20}{0}\] Since the only value is not valid, the inequality is false.

OpenStudy (candy13106):

hey keith

OpenStudy (candy13106):

can u plz help me

OpenStudy (candy13106):

im kandy44 and magie22 but it got of conection so now im cany

OpenStudy (anonymous):

so never true, sometimes or always?

OpenStudy (candy13106):

true

OpenStudy (anonymous):

are u sure

OpenStudy (candy13106):

yup dont worry wat grade do u go to

OpenStudy (anonymous):

keith please answer me

OpenStudy (anonymous):

Yes it is true.

OpenStudy (candy13106):

hes typing

OpenStudy (candy13106):

c i told u im a straight a student so dont worry

OpenStudy (anonymous):

always true or sometimes Keith?

OpenStudy (candy13106):

always true

OpenStudy (anonymous):

thank you

OpenStudy (anonymous):

ALWAYS True @gowingspans1234 Because you have the following inequality: \[14x-8\lt14x+12\] And so therefore since both sides have the same slope, this is true for any x value

OpenStudy (candy13106):

yup no problem i did half c i told u

OpenStudy (candy13106):

keith is u going to help me

OpenStudy (anonymous):

i got one more question..

OpenStudy (candy13106):

ok go ahead

OpenStudy (anonymous):

The sides of a triangle are in the ratio 3: 4: 5. What is the length of each side if the perimeter of the triangle is 90cm?

OpenStudy (candy13106):

ok i know how to do that give me a minute

OpenStudy (anonymous):

ok

OpenStudy (candy13106):

ok first step ..................

OpenStudy (candy13106):

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