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avatar+63 

Can somone help me solve this? I am completly lost. Thanks!

 Sep 12, 2019
 #1
avatar+19324 
+3

Add all of the measurements....they have to total 360 degrees....solve for 'x'

 

9x-22 +61+5x-7+34 = 360       does that help?

 Sep 12, 2019
edited by ElectricPavlov  Sep 12, 2019
 #2
avatar+63 
+3

Yes, but on number 10 I come out with a decimal. Is it suppose to be a decimal?

Masterx4020  Sep 12, 2019
 #3
avatar+19324 
+4

Let's see

12x +2x+5 + 17x-14 + 90 = 360

31x -9+90

31x+81

31x = 360-81

31x=279

x =9          Nope!  Better check your math......cheeky

ElectricPavlov  Sep 12, 2019
 #4
avatar+103858 
+1

10.

 

Note that the measure of minor arc AB  = 90

 

(2x + 5)  +  (17x - 14) + 12x   =  360 - measure of arc AB

 

31x - 9  =  360 - 90

 

31x - 9  =  270    add 9 to both sides

 

31x  = 279      divide both sides by 31

 

x = 9

 

arc AD  =  12x  =   12*9  =   108°

arc BC  = 2x + 5  =  2*9 + 5  = 23°

arc DC = 17x - 14  = 17*9 - 14  = 139°

arc DBC  = 12x + 90 + (2x + 5)  =  108 + 90 + 23  =  221°

 

cool cool cool

 Sep 13, 2019

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