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Mathematics 8 Online
OpenStudy (anonymous):

find the values of X and Y

OpenStudy (anonymous):

hartnn (hartnn):

know what vertical angles are ?

OpenStudy (anonymous):

A x=15,y=17 B x=112,y=68 C x=68,y=112 D x=17 ,=15

OpenStudy (anonymous):

I think its B

hartnn (hartnn):

not actually, its not B know about vertical angles ?

OpenStudy (anonymous):

no

hartnn (hartnn):

|dw:1388171098334:dw| a and c are vertical angles, so \(\Large a =c \) b and d are vertical angles, so \(\Large b =d \)

hartnn (hartnn):

in your question, 7x+7 and 112 are vertical angles! so, 7x+7 = 112 can you find x from here ?

OpenStudy (anonymous):

so I have to figure out what 4y is?

hartnn (hartnn):

first figure out what is the value of x from 7x+7 = 112 start by subtracting 7 from both sides

OpenStudy (anonymous):

I get 105

hartnn (hartnn):

yes, 7x = 105 so x = ... ? (divide by 7 on both sides)

OpenStudy (anonymous):

16

hartnn (hartnn):

how ?

hartnn (hartnn):

105/7 = 15 actually so, x = 15 :)

OpenStudy (anonymous):

15

OpenStudy (anonymous):

I divided by 112 instead of 105

OpenStudy (anonymous):

So the answer is D

hartnn (hartnn):

okk, so which option is your answer ? ... no, in D, y =15 is given, but we got x =15 which is only there in option A

OpenStudy (anonymous):

Ok cause we were looking for X Thank you so much

hartnn (hartnn):

yes, welcome ^_^

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