Please help 20 points
Find the measure of ∠D if

∠A = 5/2x + 30
∠B = 7/2x + 40
∠C = 9/2x + 10
∠D = 5/2x + 20

Awnser Choices
A) 60°
B) 70°
C) 80°
D) 100°

Question

05-03-2018
Mathematics

contestada

Please help 20 points
Find the measure of ∠D if

∠A = 5/2x + 30
∠B = 7/2x + 40
∠C = 9/2x + 10
∠D = 5/2x + 20

Awnser Choices
A) 60°
B) 70°
C) 80°
D) 100°

Respuesta :

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claudettoterohil claudettoterohil · Answer 1 · 2018-03-06T20:29:59+01:00

claudettoterohil claudettoterohil

06-03-2018

Four angles must add up to 360.

∠A+∠B+∠C+∠D=360 (5/2x+30)+(7/2x+40)+(9/2x+10)+(5/2x+20)=360 26/2x + 100 = 360 13x = 260 x = 20. To solve for ∠C, plug x back in: ∠C = 9/2x+10 = 9/2*20+10 = 100

Answer Link

Please help 20 points Find the measure of ∠D if ∠A = 5/2x + 30 ∠B = 7/2x + 40 ∠C = 9/2x + 10 ∠D = 5/2x + 20 Awnser Choices A) 60° B) 70° C) 80° D) 100°

Respuesta :

Otras preguntas

Please help 20 points
Find the measure of ∠D if

∠A = 5/2x + 30
∠B = 7/2x + 40
∠C = 9/2x + 10
∠D = 5/2x + 20

Awnser Choices
A) 60°
B) 70°
C) 80°
D) 100°