2.8a^2=55
a^2=55/2.8
a= square root of 55/2.8
Answer:
A function is a rule that takes an input, does something to it,
and gives a unique corresponding output.
There is a special notation, called "function notation," that is used to represent this situation:
if the function name is f , and the input name is x ,
Step-by-step explanation:
Answer:
Options (B) and (C)
Step-by-step explanation:
Farmland owned by Dwight = 1600 acres
He wants to divide his farmland into four equal parts.
So the area of each part of the land will be =
= 
This expression can be written in different ways,
1600 ÷ 4

Therefore, Options (B) and (C) will be the correct options.