Find t12 for a geometric sequence where t1=2+2i and r=3

Step-by-step explanation:

Given

Geometric Sequence (GP)

Required

Determine T₁₂

The nth term of a GP is calculated as thus;

In this case;

;   and

Substitute these values in the above formula

Open the bracket

Hence, the 12th term of the sequence is

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

probably the last option

step-by-step explanation: