Stats Situation help plz (situation is attached)

A) What is the null and alternate hypothesis?

B) Is the situation left-, two-, or right- tailed? What is the critical value?

C) What is test statistic?

D) What can you conclude about claim? (Reject Null or Fail to Reject Null)

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.

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so

step-by-step explanation:

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570, the answer is 570, hope it

i need more details

step-by-step explanation: