A(1) = 2
r = a(2)/a(1) = -8/2 = -4

Answer will be D.
!! Hope It Helps !!
30°
Here's why:
Using the well-known Pythagorian theorem we can reckon how long the hypotenuse is:
c^2=6^2+36*3 -> c=12
Knowing that sin(a)=a/c=6/12=0.5 the measure of the angle in degrees is 30°
Hope could help :)
Answer:
(3r+8)(4+1)
Step-by-step explanation:
No If it was 4 to 3 then yes but 4 can't be multiplied by anything to equal 9