Which of the following sequences is an arithmetic sequence?
a. {1,4,16,48,…}
b. {−10,5,−2.5,1.25,…}
c. {100,20,4,0.8,…}
d. {−10,−3.5,3,9.5,…}

Step-by-step explanation:

- 10 + 6.5 = - 3.5

- 3.5 + 6.5 = 3

3 + 6.5 = 9.5

9.5 + 6.5 = 16

{- 10, - 3.5, 3, 9.5,...}

Alternative D

I hope I helped you.

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:

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)