Answer:
4 nickels and 8 dimes
Step-by-step explanation:
4 nickels is 0.20 and 8 dimes is 0.80
Answer:
4 less kilgrams than previous weight
Step-by-step explanation:
C: 7
You do the multiplication and division first, then the addition and subtraction next. its a rule in math
Answer:
(a) 
Step-by-step explanation:
The question is incomplete. (See comment for complete question).
From the completed question, we have:

--- number of pyramids
Required
An expression for the area of the base
The total base length of the pyramid represents the perimeter of the base.
And since the base is a square, then the following relationship exist.

Where L represents the length of each side.
This gives

Make L the subject

The area of the base is then calculated as:

