The required expression is 100 - 0.2w
Step-by-step explanation:
Given,
Amount of radioactive substance = 100 mg
The substance decreases by 20% each week.
To find the remaining amount of the in w weeks.
Now,
Each week 20% = 0.2 of the substance will be decreased.
So, in w weeks 0.2×w of the the substance will be decreased.
Hence,
The remaining substance = 100 - 0.2w
Answer:
c
Step-by-step explanation:
Answer:
16 cm^2
Step-by-step explanation:
Hope this helps
A)6 b)4 c)2 d)0. You just have to replace X with given number.
