Question

Help on maths please convert to index form

Answer 1

Step-by-step explanation:

Because a^m / a^n = a^(m-n),

we have 5³ / 5⁷ = 5^(3-7) = 5^(-4).

Answer 2

Answer: 1.6 x 10^-3

Step-by-step explanation:

= 1/5^4

=1/625

=0.0016 = 1.6 x 10^-3