PLEASE HELP ME WILL GIVE MEDAL AND EVERYTHING EASY QUESTION
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OpenStudy (mathngn):
There are (24)2 ⋅ 20 books in a cupboard. What is the total number of books in the cupboard?
OpenStudy (mathngn):
22
26
28
216
THESE ARE THE OPTIONS
OpenStudy (mathngn):
@jim_thompson5910
OpenStudy (templeguy):
It's 216. Now answer my question
jimthompson5910 (jim_thompson5910):
It sounds like you're dealing with this expression \[\Large \left(2^4\right)^2*2^0\]
is that assumption correct @mathngn ?
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OpenStudy (mathngn):
yes it is sir!
OpenStudy (mathngn):
i pretty sure its 28 sir
jimthompson5910 (jim_thompson5910):
yes \[\Large 2^8\] is the correct answer. Nice work @mathngn
OpenStudy (mathngn):
thank u can i get more help?
jimthompson5910 (jim_thompson5910):
btw you use ^ to mean exponent
2^8 = \(\Large 2^8\)
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OpenStudy (mathngn):
yep sorry bout that
OpenStudy (mathngn):
OpenStudy (mathngn):
help with that to plsss
jimthompson5910 (jim_thompson5910):
Apply the square root to both sides. Keep in mind that \(\Large \sqrt{x^2} = |x|\) for all real values of x
Also recall that if |x| = k, then x = k or x = -k. Ie, x = plus or minus k
\[\Large x^2 = 20\]
\[\Large \sqrt{x^2} = \sqrt{20}\]
\[\Large |x| = \sqrt{20}\]
\[\Large x = \pm\sqrt{20}\]
OpenStudy (mathngn):
i dont understand
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OpenStudy (mathngn):
i think its B @jim_thompson5910
jimthompson5910 (jim_thompson5910):
where are you stuck?
OpenStudy (mathngn):
i think i got it i got the answer B is it correct?
jimthompson5910 (jim_thompson5910):
yes it's B
OpenStudy (mathngn):
AIGHT i have 1 more question is that fine
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jimthompson5910 (jim_thompson5910):
go ahead
OpenStudy (mathngn):
OpenStudy (mathngn):
im goin with 6 is that correct?
jimthompson5910 (jim_thompson5910):
the exponents 2p and 8 must be equal, so
2p = 8 ---> p = ???
OpenStudy (mathngn):
4?
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