anonymous
  • anonymous
is the following inequality always, sometimes or never true? 2(8x-4)-2x<14x+12 please answer :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
So we have \[2(8x-4)-2x\lt14x+12\] We need to isolate for x
anonymous
  • 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?
anonymous
  • anonymous
idk help

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More answers

anonymous
  • 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.
Candy13106
  • Candy13106
hey keith
Candy13106
  • Candy13106
can u plz help me
Candy13106
  • Candy13106
im kandy44 and magie22 but it got of conection so now im cany
anonymous
  • anonymous
so never true, sometimes or always?
Candy13106
  • Candy13106
true
anonymous
  • anonymous
are u sure
Candy13106
  • Candy13106
yup dont worry wat grade do u go to
anonymous
  • anonymous
keith please answer me
anonymous
  • anonymous
Yes it is true.
Candy13106
  • Candy13106
hes typing
Candy13106
  • Candy13106
c i told u im a straight a student so dont worry
anonymous
  • anonymous
always true or sometimes Keith?
Candy13106
  • Candy13106
always true
anonymous
  • anonymous
thank you
anonymous
  • 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
Candy13106
  • Candy13106
yup no problem i did half c i told u
Candy13106
  • Candy13106
keith is u going to help me
anonymous
  • anonymous
i got one more question..
Candy13106
  • Candy13106
ok go ahead
anonymous
  • 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?
Candy13106
  • Candy13106
ok i know how to do that give me a minute
anonymous
  • anonymous
ok
Candy13106
  • Candy13106
ok first step ..................
Candy13106
  • Candy13106
|dw:1378427004766:dw|
anonymous
  • anonymous
ok
anonymous
  • anonymous
keep going till the ansewer i will follow along
Candy13106
  • Candy13106
ok well do u know how to do that or do u not understand that
anonymous
  • anonymous
i understand
anonymous
  • anonymous
The answer is: Let is denote each side of the triangle. One side has a length of \(a\), the other has a length of \(b\) and the last has a lenth of \(c\) so therefore the perimeter is 90: \[a+b+c=90\] Good so far?
anonymous
  • anonymous
yep
Candy13106
  • Candy13106
wait wait wait
Candy13106
  • Candy13106
i was help him right
Candy13106
  • Candy13106
so
Candy13106
  • Candy13106
wats takeing yall so long
Candy13106
  • Candy13106
hurry plz
anonymous
  • anonymous
answer choices A: 22.5, 30, 37.5cm B: 19.3, 25.7, 32.1 C: 7.5, 11.5, 32.1 D: 10.5, 11.5, 12.5
Candy13106
  • Candy13106
ok the answer is d
anonymous
  • anonymous
So let us relate \(a\), \(b\), and \(c\) with an arbitrary variable, \(x\) We can come to the conclusion that according to the ratio: \(a=3x\) \(b=4x\) \(c=5x\) and so we have the equation: \[3x+4x+5x=90\] or \[12x=90\] and so therefore: \[x=\frac{90}{12}=\frac{30}{4}=\frac{15}{2}=7.5\] We can use this to find the sides: \(a=3x=3(7.5)=22.5\) \(b=4x=4(7.5)=30\) \(c=5x=5(7.5)=37.5\)
Candy13106
  • Candy13106
im right i lerarned this last week
anonymous
  • anonymous
I need the answer before i go to bed, you guys have been so much help I marked yall as my fans
anonymous
  • anonymous
The correct answer is A. After all, the perimeter of a triangle with sides of a b, and c are: \[P=a+b+c=22.5+30+37.5=90\] That was the original info right?
Candy13106
  • Candy13106
well the answer is d
anonymous
  • anonymous
is it d or c? haha I can't get it wrong
anonymous
  • anonymous
Its A.
Candy13106
  • Candy13106
its d beacuse when there r 3 numbers ur supposed to do wat i had showed above before he intuopeted
Candy13106
  • Candy13106
and ive leared it last week
anonymous
  • anonymous
wow idk which one to choose
Candy13106
  • Candy13106
its d plz u want good grades do u well go with me cause i learened last week and me straight a student like ive said before
anonymous
  • anonymous
Let me put it to you this way. Lets say A was right. then the sides would have to add to ninety and the ratio would need to be \(3:4:5\): Well, \(22.5+30+37.5=90\) and \(22.5:30:37.5=3:4:5\).
Candy13106
  • Candy13106
ok so hurry and clse this and put d for the answer
anonymous
  • anonymous
well u can't really trust people on here so Idk yet
anonymous
  • anonymous
Don't trust people. Trust logic.
anonymous
  • anonymous
If there was something wrong with mine, tell me.
Candy13106
  • Candy13106
well trust me beacuse me gud memory and ive learened it just last week
anonymous
  • anonymous
are u on connection academy too?
Candy13106
  • Candy13106
wats that
anonymous
  • anonymous
Whats connection academy?
Candy13106
  • Candy13106
yea idk too
anonymous
  • anonymous
nevermind i'm just trying to figure out if it;s A or D hahaha
Candy13106
  • Candy13106
dddddddddddddddddddddddddd
anonymous
  • anonymous
ok
anonymous
  • anonymous
No.
Candy13106
  • Candy13106
thats it beacuse he said that he guesses on questions that he does not now
anonymous
  • anonymous
d was right
Candy13106
  • Candy13106
yep it is
anonymous
  • anonymous
It cant be D because: \[10.5+11.5+12.5=34.5\] And the triangle does not have a perimeter of 34.5
anonymous
  • anonymous
lmao
Candy13106
  • Candy13106
close the dang question cause im right
anonymous
  • anonymous
No honestly. I don't understand what is wrong with A...and I see everything wrong with D...
Candy13106
  • Candy13106
lamo aint a word but lam is
Candy13106
  • Candy13106
ok ill prve it
Candy13106
  • Candy13106
hold on
anonymous
  • anonymous
hurry up
anonymous
  • anonymous
Prove it. Now youre talking my language.
Candy13106
  • Candy13106
ok i will i will
anonymous
  • anonymous
D doesn't even have a ratio of \(3:4:5\)
Candy13106
  • Candy13106
|dw:1378428305251:dw|
Candy13106
  • Candy13106
and the longer line means to divide
Candy13106
  • Candy13106
than
anonymous
  • anonymous
Alright so?
anonymous
  • anonymous
hurry up and yall agree on a answer so I can go to bed
Candy13106
  • Candy13106
|dw:1378428398135:dw|
anonymous
  • anonymous
So...
Candy13106
  • Candy13106
and than ......................
anonymous
  • anonymous
Keith how old are you?
anonymous
  • anonymous
16. Going into grade 12. Already with a thorough understanding of Calculus. Why?
Candy13106
  • Candy13106
there fore 3 over 4 divide by 5 = 0.15 there fore make it into a fraction
anonymous
  • anonymous
you guys agree on a answer please
Candy13106
  • Candy13106
and than u answer it make 0.15 into a fraction
anonymous
  • anonymous
So that's \(\frac{3}{20}\).
Candy13106
  • Candy13106
and if u dont know do 15 over 100
anonymous
  • anonymous
Im not sure I see where this is going...
Candy13106
  • Candy13106
and than do other work
anonymous
  • anonymous
PICK A ANSWER !!!!
anonymous
  • anonymous
Oh my god: \(A\)!!!
Candy13106
  • Candy13106
d thats all gud night
anonymous
  • anonymous
omg
Candy13106
  • Candy13106
keith just lay off and go with me
anonymous
  • anonymous
ok
anonymous
  • anonymous
goodnight
Candy13106
  • Candy13106
come on man u told me that u guess at answers keith
Candy13106
  • Candy13106
gud night and its d
anonymous
  • anonymous
Yeah. Choose whichever one. Logic has lost. I never guess. I included a full solution. What more do you want?!
Candy13106
  • Candy13106
u said that in the measage but oh well cause were both smart
Candy13106
  • Candy13106
right
Candy13106
  • Candy13106
ok so keith can u plz help me on other questions

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