Answer:
36
Step-by-step explanation:
Given
m² - 2mn + n² , substitute values
= (- 2)² - 2(- 2)(4) + 4²
= 4 - 2(- 8) + 16
= 4 + 16 + 16
= 36
b) The answer may change over time.
c) The variability in the data is limited.
d) There is no variability in the answers.
Answer:
60
Step-by-step explanation:
because half of children is 50. 120÷50=60