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OpenStudy (anonymous):
In which expression should the exponents be multiplied?
(53)−4
one third to the 4th times one third to the 7th
3 to the 7th over 3 to the 15th
45 ⋅ 42
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OpenStudy (anonymous):
@perl can you help me please
OpenStudy (perl):
hi, i am having trouble reading that. can you take a screenshot of the question
OpenStudy (anonymous):
i do not know how i am on computer hold on let me get my tabilt
OpenStudy (perl):
thx
OpenStudy (anonymous):
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OpenStudy (perl):
ok we have three exponent rules. i am going to write them down
OpenStudy (anonymous):
OK
OpenStudy (perl):
$$ \Huge \rm {
\\ a^m\cdot a^n = a^{m+n}
\\~\\~\\(a^m)^n = a^{m\cdot n }
\\~\\~\\ \frac{a^m}{a^n}= a^{m-n}
}$$
OpenStudy (perl):
call these rule 1, rule 2, rule 3.
rule 2 is what we want
OpenStudy (anonymous):
Ok
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OpenStudy (perl):
which of the options use rule 2 ?
OpenStudy (anonymous):
A and B
OpenStudy (perl):
how does B) use rule 2 ?
OpenStudy (perl):
B) is an example of rule 1
OpenStudy (anonymous):
Idk
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OpenStudy (anonymous):
So A
OpenStudy (perl):
$$ \LARGE \rm {
(5^{3})^{-4} = 5^{3\times \text{-}4 }
}
$$
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