## anonymous 3 years ago I really need some help, I have a headake and forgot how to solve for X please help me. :((

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1. anonymous

Do you have a specific problem you need to solve? I can go step by step and help you through it.

2. anonymous

4x-31 on one side and 2x+19 on the other solve for x

3. myininaya

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

4. ParthKohli

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}

5. anonymous

25?

6. myininaya

How about we have some interaction which includes the user asking here to solve for x?

7. myininaya

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.

8. anonymous

Okay thanks, I'll post another prolbem, it's really complex and I haven't seen it before

9. anonymous

|dw:1350653573213:dw|

10. anonymous

If If m ∠ 3 = 104˚, what is m ∠ 8?

11. ParthKohli

Hint: use corresponding angles identity, then find a linear pair.

12. anonymous

< 2, 3, 6,7 are the same?

13. ParthKohli

No... first use $$\angle 3 = \angle 7$$.

14. anonymous

Sorry forgot how to do this >.<

15. ParthKohli

Then notice that you have a linear pair, so $$\angle 7$$ and $$\angle 8$$ are supplementary.

16. anonymous

So they all equal 104?

17. ParthKohli

Hmm, do you know what these are? 1) Corresponding angles 2) Alternate interior angles 3) Linear pair 4) Opposite angles

18. anonymous

Yeah I'm a sinor, but I forgot it's been like a year since I was in math

19. anonymous

|dw:1350654095713:dw|

20. anonymous

Ohhhh

21. anonymous

Um. So it's not 104

22. anonymous

it's 94?

23. anonymous

>.<

24. anonymous

|dw:1350654253156:dw|

25. anonymous

<2 is going to measure the same as <8

26. anonymous

half of 180 is 90, but that's not an answer choise

27. anonymous

Yes. <2 is the same as 8. They give you angle 3, 104 degrees. What other angles are the same as angle 3?

28. anonymous

*the same as <8

29. anonymous

<2

30. ParthKohli

<3

31. anonymous

No, angle 2 and 3 are supplementary. Added up they equal 180 degrees. |dw:1350654491698:dw|

32. anonymous

so they are all 104

33. anonymous

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.

34. anonymous

Yeah I understand but how to I find out how much the other angles are

35. anonymous

Supplementary angles form 180 degrees. A straight equals 180 degrees. |dw:1350654810017:dw|

36. anonymous

So 104 + ? = 180

37. anonymous

I got my test wrong anyways. Sorry, thanks for the help

38. anonymous

Sorry to hear that. ):