Question

please solve 100 points​

Answer 1

Answer✔️

Metals are separated by nonmetals on a periodic table through a zigzag line starting from carbon, till radon. The elements between the two are phosphorus, selenium and iodine. These elements and elements right to them in the periodic table are nonmetals.

Answered by :- @BrainlyParrot

Answer 2

Answer:

Let y = 100

Then reduction = 20% = 20

Then x = 100 – 20 = 80

(i)x/y = 80/100 = 4/5 (Diving by 20)

(ii) (y – x)/y = (100 – 80)/100

= 20/100

= 1/5 (Dividing by 20)

(iii) x/(y – x)

= 80/(100 – 80)

= 80/20

= 4/1 = 4 (Dividing by 20)