Question

Evaluate: 20/ 5·2^-3

Answer 1

Explanation:

`= (20)/(5) . {2}^( - 3)`

`= 4. \frac{1}{ {2}^(3) }`

`= (4)/(2 * 2 * 2)`

`= (4)/(8)`

`= (1)/(2)`

Answer 2

2^-3 = 0.125
0.125 x 5 = 0.625
20/0.625 = 32

The answer is 32.