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nike4luv (f)
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what way u using..are u sure u multiplying the values well?
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hot-angel (f)
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I did the whole process on page one. Anyways.. let's move on. I'll ask my friend's brother that's in grade 5 to teach me.  i don't know proof too.. will u do that and ask the next question? |
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nike4luv (f)
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whats proof..don't kno that
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hot-angel (f)
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Okay ill ask the next question. Kamakaula will answer proof when he comes.
use almighty formula to solve
2x2-4x+2 = 0
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nike4luv (f)
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-b + - √b 2-4ac all over 2a..u don't want to know how i worked it
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hot-angel (f)
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yeah that's the forumula.. Use it to solve the question. Sawry i dint give you before.
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kamakula
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I just saw this post: kamakula am sorry to bust your bubble but your answer is wrong! (2 7/9) 1/2= 5/3 or 1 2/3how its done: first change (2 7/9) into an improper fraction which is 25/9 then 1/2 means squareroot..u feel me? therefore its gon be √- sqareroot of 25/9 which is 5/3: 25-5 9-3 so answer is 5/3 or 1 2/3do u get it ?  You are seriously telling me that 2^(7/9) can be turned into an improper fraction? Where do you get that? 2^(7/9) is 2 raised to the seventh power then you take the ninth root. here is a simple example (2^2)^2 = 2^(2*2) = 2^4. don't believe me? 2^2 = 4 and 4^2 = 16. 2^4 = 16. Use your improper fraction thing and tell me if you get the same thing. Also by definition: 1 raised to any power = 1. 1^(2/3) = 1, NOT 5/3 ------------------------------ And there was a mistake in my question at the endso don't worry about it. |
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kamakula
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As to the hot-angel's question . . .
2x2 - 4x + 2 = 0 (divide both sides by two)
x2 - 2x + 1 = 0 (lets see. .what can i factor)
(x - 1)(x - 1) = 0 (yes, I've solved it)
x = 1 (a double root at x == 1)!
The only time you need to use the solution to a quadratic equation is when the roots are not whole numbers. Otherwise, you can always figure it out without having to use the equation.
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hot-angel (f)
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kamakula.. i said using almighty formula.. not factorization method. And ermm.. u can use almighty formular (quadratic formula) Anytime.. anywhere, to solve any quadractic equation. That's why it's called ALMIGHTY! It answers every quadractic equation. |
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kamakula
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sorry. . . i know you can use it every time. . . but since you'D get the same answer, I didn't bother. Sorry Ma'am.
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hot-angel (f)
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Uhmm NO u don't know u can use it anytime.. You said The only time you need to use the solution to a quadratic equation is when the roots are not whole numbers. Otherwise, you can always figure it out without having to use the equation. That was what u said! |
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kamakula
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umm,
hot angel. . .
if i said the only time you NEED to wash your hands is when they are dirty, does that mean I said you can ONLY wash your hands when they are dirty?
Reread what I said - i did not say you CANT use the solution all the time, I only said you only NEED to use it when solutions are not nice whole numbers.
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hot-angel (f)
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Alright.. sawry i got u wrong. Next questION?  |
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WesleyanA (f)
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this thread sucks.
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kamakula
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ohthen i guess there's no point in posting anymore questions. . .
i was trying to come up with good ones .. . not just easy step by step solution types. ..
I guess i can do something else now.
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thupsie (m)
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Please i cud not get the answer for the one which angel posted
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Seun (m)
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what is log 256 to base 4?
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edygirl (f)
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Question;
Edygirl is 3times as old as her sister chigirl. Five years from now, Edygirl will be twice as old as Chigirl. How old is each now?
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dominobaby (f)
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Edygirl is fifteen now while chigirl is 5.
In five years time edygirl will be twenty while chigirl will be twenty!
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dominobaby (f)
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Edygirl is fifteen now while chigirl is 5.
In five years time edygirl will be twenty while chigirl will be twenty!
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edygirl (f)
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Girl, you got their ages now.
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nyceguy
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what is log 256 to base 4?
log 256 = log 4^5 =5log4. what is the gradient of the equation: x^3 + 3x^2 + 2x +5 |
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nico (m)
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If u mount on twin peak and ride on mount canyon
how much do you get?
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ladex142 (m)
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Hmmm, nice. I'll be back to ask u guys some questions, hopefully you're know the answer 
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edygirl (f)
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log 256 = log 4^5
=5log4.
what is the gradient of the equation: x^3 + 3x^2 + 2x +5
Niceguy, I am kind of confused. By gradient did you mean to differenciate ? And again Is this x to power 3 and 3x to power 2? Anyways if that is ,what it is, then the answer to the equation is : 3x to power 2 plus 9x to power 2 plus 2. 5 when differenciated will be zero, If that is not the answer let us know it's been so long I did maths. |
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ladex142 (m)
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Anyone, anybody, everyone, everybody try this simple one:
Q- Find a point on the y-axis that is equidistant from (5,-5) and (1,1)
Hint: you don't need to plot a graph, just minor calculation.
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edygirl (f)
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You only ask. You don't answer. Well the answer to your question is 3 and -2. |
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ladex142 (m)
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Nil
A: (5,-5) and (1,1) D(5,-5)= [(5-0)^2+(-5-y)^2]^1/2=[5^2+(y+5)^2]^1/2
D(1,1)= [(1-0)^2+(1-y)^2]^1/2=[1^2+(y-1)^2]^1/2
therefore [5^2+(y+5)^2]^1/2=[1^2+(y-1)^2]^1/2
5^2+(y+5)^2=1^2+(y-1)^2
25+(y^2+10y+25)=1+(y^2-2y+1)
12y=-48
y=-4
Ans=(0,-4)
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