anonymous one year ago Which expression is equivalent to one over fourn − 16? HELP PLEASE FOR A MEDAL! A)1/4(n-4) B)1/4(n-64) C)4(n-4) D)4(n-64)

1. Nnesha

distribute parentheses by outside term

2. anonymous

Can you tell me the answer I will give you a medal? @Nnesha

3. Nnesha

distribute = multiply example a(b+c)= a times b + a times c = ab+ac now try that

4. anonymous

5. Nnesha

how ?? 4(n-64) distribute parentheses by outside term let me know what you get :-)

6. anonymous

D @Nnesha

7. Nnesha

how ??

8. anonymous

I don't get this it's between A and C but how do you do this? @Nnesha

9. Nnesha

distribute 2nd parentheses by outside term for example B |dw:1434213817087:dw| multiply 4 times n= ?? 4 times -64 =?

10. anonymous

C @Nnesha

11. Nnesha

how did you get C ? it's B ?? how did yo uget B ??

12. Nnesha

or D or A how did you get ???

13. Nnesha

4 times n = ?? 4 times -64 = ??? n is same as 1n so multiply the coefficient (4 times 1)n = ?

14. anonymous

I knew it, it was B but then you said it wasn't right

15. Nnesha

i didn't say it's wrong it can be A B C or D i want to know how did you get the answer ? DON'T guess!

16. anonymous

You Just have to Distribute 4n then you have to multiply 4 times 64 you will get 256 by that you divide 256 by 4 then it will give you 64 so B is your answer @Nnesha

17. Nnesha

alright B $\huge\rm \frac{ 1 }{ 4n -256 }$ first 4 times -64 = Negative 256 so how did you divide 256 by 4 ?

18. anonymous

Can you help me with one more please then I will give you a medal? @Nnesha

19. Nnesha

20. anonymous

21. Nnesha

what u got ?

22. anonymous

B @Nnesha

23. Nnesha

no

24. anonymous

What? @Nnesha

25. anonymous

I am Confused rn? @Nnesha

26. Nnesha

yes right expression should be equal to $\frac{ 1 }{ 4n -16}$ so that's how B isn't correct

27. anonymous

Then can you please tell me the answer I will give you a medal @Nnesha

28. Nnesha

if B is incorrect then try another one :-)

29. anonymous

30. Nnesha

$\frac{ 1 }{ 4(n-4) }$ distribute parentheses by 4

31. Nnesha

D: is it equal to 1/4n-16 ??

32. anonymous

Nooo it's A @Nnesha

33. Nnesha

solve that let me know what you get

34. anonymous

Distribute 4n and distribute 4 times 4 then it gives you 16 after that you divide it by 4. So the answer will be 1/4(n-4) So the answer is A @Nnesha

35. Nnesha

divide by which 4 ? and 4 times -4 = what ?

36. anonymous

The 2nd 4 @Nnesha

37. Nnesha

$\frac{ 1 }{ 4(n -4) } = \frac{ 1 }{ 4 \times n - 4 \times 4 }$

38. anonymous

Do you know the answer? @Nnesha

39. Nnesha

yes

40. anonymous

Can you please tell me? @Nnesha

41. Nnesha

4(n-4) = ??? 4n and -4 times 4 =?

42. Nnesha

no i want you to learn it!!!

43. anonymous

-16 @Nnesha

44. Nnesha

yes right so it is $\frac{ 1 }{ 4n -16 }$ there is nothing to divide with

45. anonymous

You can divide 16/4? @Nnesha

46. Nnesha

how ??? 16 is at the denominator

47. anonymous

ohhhh then what's the answer? @Nnesha

48. Nnesha

$\frac{ 16 }{ 4} <-->divide~~~~~~\frac{ 4 }{ 16 }$ that's the division

49. Nnesha

50. anonymous

C @Nnesha

51. Nnesha

52. Nnesha

which option we just solved & got 1/4n -16

53. anonymous

54. Nnesha

55. anonymous

A @Nnesha

56. Nnesha

yes

57. anonymous

Thanks:) @Nnesha