Question

Which expression is equivalent to 3^2 ⋅ 3^−5?

fraction 1 over 3 to the power 3
fraction 1 over 3 to the power 7
fraction 1 over 3 to the power negative 3
fraction 1 over 3 to the power negative 7

Answer 1

when multiply same bases you should add their exponents \[\huge\rm x^m \times x^n=x^{m+n}\]

Answer 2

negative exponent \[\huge\rm x^{-m}=\frac{ 1 }{ x^m}\]
*flip the fraction*

Answer 3

any question ? did u understand ? yes or no ?

Answer 4

yeah thanks

Answer 5

so it will be fraction 1 over 3 to the power negative 7 @Nnesha ?

Answer 6

hmm no first add
both exponents and then flip the fraction

Answer 7

oh so its fraction 1 over 3 to the power 7

Answer 8

\[\huge\rm 3^2 \times 3^{-5} = 3^{??}\]

Answer 9

i got 0.037... when i multiplied them

Answer 10

well don't use calculator
read my first comment
here is an example \[\huge\rm 2^5 \times 2^{-6}= 2^{5+(-6)}\]

Answer 11

its A

Answer 12

how ? explain plz

Answer 13

i don't know

Answer 14

hmm why did you say its A ?
anyways
\[\huge\rm 3^2 \times 3^{-5} = 3^{2+(-5)}= 3^{??}\]

Answer 15

when we multiply same bases we should add their exponents