Question

please answer this question quickly​

Answer 1

Answer:

1. 0.42 = 42/100 = 21/50

Answer 2

I will do first and second.

Third and fourth are similar to second one.

Step-by-step explanation:

1)

$0.42 = \frac{0.42}{1} = \frac{0.42 \times 100}{100} \\ = \frac{42}{100}$

2)

$say \: x = 0.5555... which \: is \: equ.\: 1\\ 10 \times x = 5.5555...which \: is \: equ.2 \\ subtract \: equ.1 \: \: from \: equ.2 \\ 9x = 5 \\ x = \frac{5}{9} \\ i.e. \: 0.5555.. = \frac{5}{9}$

Hope this helps you