Answer:

Step-by-step explanation:
If the length of the square side is a units, then the area of the square is

In your case, the side length is

then the area is

Answer:
It could be AAA
Step-by-step explanation:
there are only angles and no sides that are labled
Answer:
309
Step-by-step explanation:
a = 3, d = 6, n 52
Nth term of an Arithmetic sequence is given as:

B is correct, and D is correct.
that is the answer to that question. Ive already done this question before and I got it right everytime

check your calculator for the [!] factorial button.
also bear in mind that most calculators also have an [ₙPᵣ] button, to get Permuations, and you can just use that.