Answer:
6.06%
Step-by-step explanation:

Answer:
Missing constant: 100
Step-by-step explanation:
perfect square (a - b)^2 = a^2 - 2ab + b^2
In this case
20x = 2 * x * 10
and
10^2 = 100
so
(x - 10)^2 = x^2 - 20x + 100
Answer:
m
Step-by-step explanation:
Answer:
140
Step-by-step explanation:
5 times 4 is 20 which is the amount of browiners 20 times 7 is 140