Which of the following are geometric sequences

B), C) and D)

Step-by-step explanation:

A geometric sequence is the sequence in which the ratio between any two consecutive terms a constant. It is represented by "r".

Common ratio = Second term /First term

The general forma  of a geometric sequence is a. ar. a^2ar^n.

Let's find the common ratio.

A.  4/1 = 4 ; 9/4 = 2.25

The common ratio is not the same through out the sequence. Therefore, it is not a geometric sequence.

B. 5/10 = 1/2 ; 2.5/5 = 1/2 ; 1.25/2.5 = 1/2

The common ratio is the same through the sequence. Therefore it is a geometric sequence.

C. 1, 2, 4, 8,16, 32

Common ratio = 2/1 = 2

4/2 = 2; 8/4 = 2

The common ratio is the same through the sequence. Therefore it is a geometric sequence.

D. 2, -2, 2, -2, 2, -2

The common ratio = -2/2 = -1

-2/2 = -1

So here a = 2 and r = -1

The common ratio is the same through the sequence. Therefore it is a geometric sequence.

Therefore, answer is  B), C) and D)

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

do you have a picture of the table