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Mathematics 16 Online
OpenStudy (anonymous):

More Algebra help please!! ^_^

OpenStudy (anonymous):

I chose C

rishavraj (rishavraj):

why C???

OpenStudy (anonymous):

Because I solved it and saw that C looks right. But im guessing not now xD

rishavraj (rishavraj):

lol,......see \[a^{x + 2} = a^{3x - 8}\] it means \[x + 2 = 3x - 8\]

OpenStudy (anonymous):

So D? Im so confused.

rishavraj (rishavraj):

Yup...:)

OpenStudy (anonymous):

I have 2 more >_< For this one I didn't know what to choose o-o

rishavraj (rishavraj):

see graph suggests tht when x = 5 ; f(x) = -2 and also x = -2; then f(x) = -5 remember a question u asked previous time...its like tht

rishavraj (rishavraj):

@LeilaJudeh wht say???

OpenStudy (anonymous):

so set x equal to 5 and figure that out right?

rishavraj (rishavraj):

yeah.....check options ...u r gonna enjoy..

OpenStudy (anonymous):

A

rishavraj (rishavraj):

BINGO.....:))

OpenStudy (anonymous):

ONE MORE But I have noooo idea for this one

rishavraj (rishavraj):

pH = - log (conc. of H+)

OpenStudy (anonymous):

that looks scary o-o

OpenStudy (anonymous):

okay so II plug in the ph, but then how do I solve it?

rishavraj (rishavraj):

i used scientific calculator...lol...;P got the answer.....

OpenStudy (anonymous):

I have no idea what im doing rishav o.O

rishavraj (rishavraj):

see \[3.1 = - \log {H} \] \[10^{3.1} = [H]^{-1}\] [H] -- means concentration of hydrogen ions

OpenStudy (anonymous):

idk A?

rishavraj (rishavraj):

nah .....

OpenStudy (anonymous):

THIS IS HARD.

rishavraj (rishavraj):

u got something like \[1.79 \times 10^{-4}\]

OpenStudy (anonymous):

no?

rishavraj (rishavraj):

wht did u get??

OpenStudy (anonymous):

a bunch of random number. I have no idea what im doing...! o-o

rishavraj (rishavraj):

hold on

OpenStudy (anonymous):

...

rishavraj (rishavraj):

rishavraj (rishavraj):

have a look...i hope it helps...and yeah i used scientific calculator for solving it

rishavraj (rishavraj):

@LeilaJudeh and yeah the values r really creepy....huh

OpenStudy (anonymous):

Okay so I see how to you did it. But seriously its very confusing

rishavraj (rishavraj):

ya it is .....all bcoz of the values.......

OpenStudy (anonymous):

-.- Anyways Thank you Risshav!!

rishavraj (rishavraj):

hey theres only one "s" in my name.....plzzz

OpenStudy (anonymous):

That was supposed to be an H xDD

rishavraj (rishavraj):

and yeah u r most welcome.....no my name contains one "h"....lol..... :)))xD

OpenStudy (anonymous):

yea ik so I meant to put riSHav one s and one h xD

rishavraj (rishavraj):

thanks....:)

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