Question

Q23. The value of (3^-7 ÷3^-10) 3^-5 is *
3
1/3
1/9
9​

Answer 1

Answer:

1/9

Step-by-step explanation:

(3^-7÷3^-10) 3^-5

3^(-7)-(-10) × 3^-5

3^-7+10 × 3^-5

3^3 × 3^-5

3^3+(-5)

3^3-5

3^-2

-9

1/9

Answer 2

$( \frac{ {3}^{ - 7} }{ {3}^{ - 10} } ) {3}^{ - 5} \\ \\ (\frac{1}{ {3}^{ - 3} } ) {3}^{ - 5} \\ \\ {3}^{ - 2} \\ \\ \frac{1}{9}$