Question

5 power -1 divide 4 power -1​

Answer 1

Answer:

By reciprocal,

It becomes 4/5

I.e, = 0.4

Answer 2

Answer:

64/125

Step-by-step explanation:

Anything to the power -1 gets inverted when simplifying.

Here the given sum is (5^-1 ÷ 4^-1)^3.

So, when we simplify this sum, we use BODMAS rule where simplification is done in this manner- Bracket, order, division, multiplication, addition,subtraction.

So, here first we simplify the portion under bracket, what we get is:

(1/5÷1/4)^3 [To omit -1 we reciprocate the number]

(1/5* 4/1)^3

= (4/5)^3

=64/125 [By cubing 4 we get 64 and by cubing 5 we get 125]