M2 = 12x - 2
2
+
40°

x = 6

Step-by-step explanation:

m∠2 and the unknown angle are congruent since their opposite sides are also congruent.

m∠2 = 12x - 2

Unknown angle = y = 12x - 2

m∠2 + y + m∠40° = 180°  since they are angles of a triangle

12x - 2 + 12x - 2 + 40 = 180

24x - 4 + 40 = 180

24x + 36 = 180

Subtract 36 from both sides

24x = 144

Divide both sides by 24

x = 6

I hope I helped!

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step-by-step explanation:

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the number 100 represents the number of trials in the experiment.

49/100 represents the experimental probability of the coin landing heads up.

step-by-step explanation: