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# Need help

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10 Okay so are the formulas the same as before? There are 2 other angles given now..

Feb 26, 2019

#1
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OK.....

1  the arc C  all of the way around to A   is   2 * (5x+2)

This same arc is equal to 360 - 87 - 39     Right?   Can you do it now?

2  ARC YZ = 2 * 59     This plus  the 75 degree arc      =   2 * 59 + 75

THIS plus the  17x-20 arc = 360 degrees (the entire circle)

so  2 * 59 + 75   + 17x -20 = 360     Right?  Need more?

Feb 26, 2019
#2
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Okay so I would have to do 2*4 and that would be 5x+4=234

And eventually I would get 46

For the next one...I'm not sure actually. 17x-20+268=360??

RainbowPanda  Feb 26, 2019
#4
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close RP    2*(5x+2) = 360 - 87-39

10x +4  = 234   continue......

ElectricPavlov  Feb 26, 2019
edited by ElectricPavlov  Feb 26, 2019
#6
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Wait so i'm actually wrong???

RainbowPanda  Feb 26, 2019
#7
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I think so RP      10x + 4 = 234

10x = 230

x = 23

ElectricPavlov  Feb 26, 2019
#8
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Oh okay it seems like it could be either one >.< im confused

RainbowPanda  Feb 26, 2019
#9
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Here is where you went wrong:

close RP    2*(5x+2) = 360 - 87-39       =======>    2*(5x+2) does not equal  5x + 4

10x +4  = 234

ElectricPavlov  Feb 26, 2019
edited by ElectricPavlov  Feb 26, 2019
#10
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Oh yeah you're right! My bad!

RainbowPanda  Feb 26, 2019
#3
+2

For the second one....note that arc YZ  = 2 * 59 =   118

So we have that

Sum of the measures of the arcs = 360

75 + 118 + (17x - 20) = 360      simplify

55 + 118 + 17x   =  360

173 + 17x = 360       subtract  173 from both sides

17x = 187     divide both sides by 17

x = 11   Feb 26, 2019
edited by CPhill  Feb 26, 2019
#5
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Thanks that makes sense lol

RainbowPanda  Feb 26, 2019