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Mathematics 7 Online
OpenStudy (anonymous):

help?!?!?!?!?!?

OpenStudy (anonymous):

OpenStudy (solomonzelman):

Subtract exponents when dividing and add when multiplying.

OpenStudy (solomonzelman):

B

OpenStudy (solomonzelman):

Yes, what do you not understand?

OpenStudy (anonymous):

what do you mean b? its not multiple choice did you not click on the picture?

OpenStudy (ikram002p):

try to simplyfy each one answer can u do that ??

OpenStudy (ikram002p):

ok i'll simplify mike answer to u \[\frac{ x^\frac{ 8 }{5 }.x \frac{ 4 }{ 8 } }{ x \frac{ 2 }{5 } }\] \[(x^\frac{ 8 }{ 5 }.x^\frac{ 4 }{ 8 })\div x^\frac{ 2 }{ 5 } \] \[(x^\frac{ 8 }{ 5 }+\frac{ 4 }{ 8 } )\div x^\frac{ 2 }{ 5 }=x^\frac{ 28 }{15 } \] \[x^(\frac{ 28 }{15}-\frac{ 2 }{ 5 })=x^\frac{ 22 }{ 15 }\neq x^2\]

OpenStudy (ikram002p):

scott answer \[(\sqrt[6]{x})^3=x^\frac{ 3 }{ 6 }=x^\frac{ 1 }{ 2 }\neq x^2 \]

OpenStudy (gorv):

when base is same then power will add up on multuplication and subtract in division

Directrix (directrix):

@ikram002p Would you check what you wrote at the beginning as Mike's problem? Thanks.

OpenStudy (ikram002p):

kim answer \[\sqrt[5]{x}.x^\frac{ 2 }{5 }.x^\frac{ 3 }{5 }.x^\frac{ 4 }{5 }=\sqrt[5]{x}.x ^\frac{ 9 }{ 5 }\] \[\ x ^\frac{ 9 }{ 5 .5}\]

OpenStudy (ikram002p):

@Directrix ohhh..i put 8 insted of 5 !!

Directrix (directrix):

Just re-do it, @ikram002p

Directrix (directrix):

@ikram002p Here is what I got for Kim.

OpenStudy (ikram002p):

huh .. ok :)

Directrix (directrix):

@lowcard2 It appears to me that there is one student in the problem whose work is not correct and three students whose work is correct. Would you look and see if you posted the question correctly? Thanks.

OpenStudy (gorv):

@Directrix ur r right buddy

OpenStudy (anonymous):

kim answer?

Directrix (directrix):

Kim's answer is x^2. Kim is also correct. This appears to be the same question: http://openstudy.com/updates/5256f926e4b002bdb08e3b49

OpenStudy (anonymous):

Should i write scott and kim are correct?

Directrix (directrix):

Three people are correct and one person is wrong. Mike, Kelly, and Kim got x^2. Scott got x^(1/2) which does not equal x^2.

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