AngelLeigh-Anne
I really need some help, I have a headake and forgot how to solve for X please help me. :((
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jazy
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Do you have a specific problem you need to solve? I can go step by step and help you through it.
AngelLeigh-Anne
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4x-31 on one side and 2x+19 on the other solve for x
myininaya
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So we have this:
4x-31 = 2x+19
Get your terms that have factor x on one side
All other terms, your constant terms, on the other side
ParthKohli
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Let's make up an equation and I'd solve it for you:\[\begin{aligned}6x + 3&=9x - 1\\6x&=9x - 1 - 3\\ 6x&=9x-4\\6x - 9x&=-4\\ -3x&=-4\\ x &={4 \over 3} \end{aligned}\]
AngelLeigh-Anne
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25?
myininaya
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How about we have some interaction which includes the user asking here to solve for x?
myininaya
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So we have 4x-31=2x+19
Do you know how to put your x terms together and your constant terms together?
You need to do this by adding/subtracting terms from both sides.
AngelLeigh-Anne
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Okay thanks, I'll post another prolbem, it's really complex and I haven't seen it before
AngelLeigh-Anne
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|dw:1350653573213:dw|
AngelLeigh-Anne
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If If m ∠ 3 = 104˚, what is m ∠ 8?
ParthKohli
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Hint: use corresponding angles identity, then find a linear pair.
AngelLeigh-Anne
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< 2, 3, 6,7 are the same?
ParthKohli
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No... first use \(\angle 3 = \angle 7\).
AngelLeigh-Anne
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Sorry forgot how to do this >.<
ParthKohli
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Then notice that you have a linear pair, so \(\angle 7\) and \(\angle 8\) are supplementary.
AngelLeigh-Anne
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So they all equal 104?
ParthKohli
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Hmm, do you know what these are?
1) Corresponding angles
2) Alternate interior angles
3) Linear pair
4) Opposite angles
AngelLeigh-Anne
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Yeah I'm a sinor, but I forgot it's been like a year since I was in math
jazy
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|dw:1350654095713:dw|
AngelLeigh-Anne
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Ohhhh
AngelLeigh-Anne
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Um. So it's not 104
AngelLeigh-Anne
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it's 94?
AngelLeigh-Anne
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>.<
jazy
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|dw:1350654253156:dw|
AngelLeigh-Anne
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<2 is going to measure the same as <8
AngelLeigh-Anne
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half of 180 is 90, but that's not an answer choise
jazy
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Yes. <2 is the same as 8.
They give you angle 3, 104 degrees. What other angles are the same as angle 3?
jazy
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*the same as <8
AngelLeigh-Anne
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<2
ParthKohli
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<3
jazy
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No, angle 2 and 3 are supplementary. Added up they equal 180 degrees. |dw:1350654491698:dw|
AngelLeigh-Anne
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so they are all 104
jazy
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No, angles 3, 1, 5, 7 are all corresponding. So if angle 3 is 104 degrees, then so are 1,5,7.
Do you understand?
Angles 2, 4, 6, 8 are also corresponding to each other.
AngelLeigh-Anne
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Yeah I understand but how to I find out how much the other angles are
jazy
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Supplementary angles form 180 degrees.
A straight equals 180 degrees. |dw:1350654810017:dw|
jazy
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So 104 + ? = 180
AngelLeigh-Anne
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I got my test wrong anyways. Sorry, thanks for the help
jazy
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Sorry to hear that. ):