Which sequence has a common ratio of 2? a{20, 40, 80, 160, 320, 640, …} b{20, 10, 5, 2.5, 1.25, 0.625, …} c{20, 15, 10, 5, 0, -5
Elis [28]
Answer:
A
Step-by-step explanation:
40/20=2
80/40=2
Therefore the common ration is 2
Answer:
17.5
Step-by-step explanation:
90% sure
Answer:
x + 52 + 78 = 180
Step-by-step explanation:
By angle sum property of a triangle:

Quadrant 1
Hope this helps!
Brainliest is much appreciated!