Mathematics
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OpenStudy (anonymous):
find the values of X and Y
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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 ?
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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
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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 :)
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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
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hartnn (hartnn):
yes, welcome ^_^