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Mathematics 8 Online
OpenStudy (mathngn):

PLEASE HELP ME WILL GIVE MEDAL AND EVERYTHING EASY QUESTION

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 ?

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 = \(\Large 2^8\)

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

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

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?

jimthompson5910 (jim_thompson5910):

yes p = 4

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