Answer:
6.68754...
Step-by-step explanation:
Assuming you mean:

If your still using number blocks then it is 20 ones but if its just addition or so it is just 20
Answer:
0.3333
Step-by-step explanation
it might be the answer. hope it helped :)
Hey there!
c² = 5c
Subtract 5c from both sides:
c² - 5c = 5c - 5c
Simplify :
c² - 5c = 0
c = 5 , c = 0