I am unsure how to work out 1a 1b and 1c please help ahh

a) 112°

b) 81°

c) 31°

Step-by-step explanation:

ABD = 180 - CBD

CBD = ABD

(Corresponding angles)

ABD = 180 - 68 = 112°

AED = BDC

(Corresponding angles)

BDC = 180 - 99 = 81°

AED = 81°

ACE = 180 - 68 - 81 = 31°

(Total angle in a triangle is 180°)

a) 112°

b) 81°

c) 31°

Step-by-step explanation:

Q1. a) ∠ABD= 180° -68° (int. ∠s, AE//BD)

∠ABD= 112°

b) ∠AED= 180° -99° (int. ∠s, AE//BD)

∠AED= 81°

c) ∠ACE= 180° -68° -81° (∠ sum of traingle ACE)

∠ACE= 31°

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

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