4) The explicit formula for a given /geometric sequence is an = a (r)^(n-1) Given the geometric sequence -6,2,- 2/3
a. Find "r”
b. Find a34 (show the work and write the decimal rounded to the 10th place)

this is not the answer this is just a question. is this middle school math?

step-by-step explanation:

20%

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.