Mathematics
14 Online
OpenStudy (anonymous):
helpp on geometry
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OpenStudy (apolloschariot):
can you post your question?
OpenStudy (anonymous):
This is it
OpenStudy (apolloschariot):
#41?
OpenStudy (anonymous):
and #42 if you can i put the pic of that question after if u want to do it with me
OpenStudy (nikato):
First, you want to solve for x.
And you know
<CDK + <KDE =<CDE
Can you set up the eqûation?
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OpenStudy (anonymous):
yes lemme do it for yu
OpenStudy (anonymous):
30+14x-2=1+23x
28+14x=1+23x
-9x=17
x=-3
OpenStudy (nikato):
You made some algebraic error.
Should have gotten x=3
OpenStudy (anonymous):
yes your right it is 3
OpenStudy (nikato):
Ok. Now plug in 3 for x to solve for <CDE
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OpenStudy (anonymous):
so its 70
OpenStudy (nikato):
Correct
OpenStudy (anonymous):
so now can you help me with number 42
OpenStudy (anonymous):
This is 42
OpenStudy (nikato):
Same thing.
Set up an equation and solve for x first
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OpenStudy (anonymous):
180+3x-10=-10+17x
170+3x=-10+17x
180=14x
x=12.8
OpenStudy (nikato):
Not quite.
It's <WDC + <WDE= <CDE
OpenStudy (nikato):
Because those two angles put together makes <CDE
OpenStudy (anonymous):
3x-10-10x+17=180
-7x+7=180
-7
OpenStudy (anonymous):
i got a decimal also
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OpenStudy (anonymous):
24.7
OpenStudy (nikato):
I think you're copying the problem wrong.
3x -10 -10 +17x=180
OpenStudy (anonymous):
3x-10-10+17x=180
20x-20=180
20x=200
x=10
OpenStudy (nikato):
Correct. Now plug 10 for x and solve for <WDE
OpenStudy (anonymous):
160
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OpenStudy (nikato):
Correct
OpenStudy (anonymous):
thank you so much i really appreciate it!!!!!!!!!!!!
OpenStudy (nikato):
No problem
OpenStudy (anonymous):
this just made me finish my summer packet
OpenStudy (anonymous):
and thanks for the medal too!!
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OpenStudy (nikato):
Eww. You have summer hw