Find the first three terms of the sequence described by the following recursive formula: an = 3an – 1 + 2 where a4 = 20 a1= a2= a3=

a1= -2/9

a2= 4/3

a3= 6

Step-by-step explanation:

a_4= 20

lets plug in 4 for n

Subtract 2 from both sides and then divide by 3

18 = 3a_3

lets plug in 3 for n and use a3=6 to find a2

Subtract 2 from both sides and then divide by 3

4 = 3a_2

lets plug in 2 for n and find out a1

Subtract 2 from both sides and then divide by 3

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

1 and 0

step-by-step explanation: