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1.

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4.

Guest Dec 6, 2018
 #1
avatar+118 
+4

1.)

8x + 50 = 130

 

x = 10

 

2.)

2x + 3x + 3x = 180

 

x = 45/2

 

y = 2x

y=2(45/2)

y=45

echofire18  Dec 6, 2018
 #2
avatar+14579 
+1

1 The two labelled angleas are the same measure    so  130 = 8x +50     solve for x

2  Triangles angles add to 180   so   180 = 2x + 3x + 2x       solve for x   angle s = 2x

3 I assume   5x is actually 5y

     angles add to 180 degrees   so     2y+20   +  5y  + 40 = 180     solve for y

4 AC and AB are same length so   2x+23 = 4x+1     solve for x and substitute into  3x-8 to find  BC

ElectricPavlov  Dec 6, 2018
 #3
avatar
+1

No it's 5x for #3

Guest Dec 6, 2018
 #4
avatar+14579 
+1

OK....I see that now

5x = 40 degrees   (since the opposite sides are =)

180 degrees in a triangle so     40 + 40 +   2y+20 = 180     solve for y = 40

ElectricPavlov  Dec 6, 2018

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