## anonymous 5 years ago My calculator died & I don't have a new one yet. Would someone please solve this for me. Thanks!! 1.3√ 160 = ____

1. amistre64

2. amistre64

what factors of 160 are perfect squares?

3. anonymous

I tried to Google it no luck. Even tried to find an online root calculator... it didn't except the decimal place...wanted Whole number

4. anonymous

Oh come pls....its been almost 30 yrs since school

5. amistre64

so you simply need the whole number of this thing?

6. amistre64

it was 20 yrs for me lol

7. anonymous

Its part of a formula for calculating the DPN for a sailboat. For racing. its used for multiple class races to even out

8. amistre64

1.3 * sqrt(160 is what google will accept as the equation)

9. anonymous

it is 1.3 root of the Sail Area. which is 16o sq-ft

10. anonymous

oh

11. amistre64

1.3 * sqrt(160) that is

12. anonymous

I enterd the sqrt symbol Thanks!!!

13. anonymous

1.3 * sqrt(160) = 16.4438438

14. amistre64

1.3 * sqrt(160) = 16.4438438 from the google :)

15. anonymous

so 1.3√160= 16.44

16. anonymous

Thanks for the help!!

17. amistre64

youre welcome:)

18. anonymous

Its 16.44..... All the Best :D

19. anonymous

OK......thanks! but I think that is wrong...... Will someone with a good old fashioned HP Reverse polish notaion calculator check this for me. I think it is actualy: 1.3rd root of 160 = 49.5994556 1.3 * sqrt(160) = 16.4438438 is really saying 1.3 times the square root of 160 which is like 12.65, so 12.65 x 1.3 = 16.44 OK so after 30 yrs I may not remember everything I learned in HS, but I do know enough to check alternate sources, and I do have common sense. Thanks for the help!

20. anonymous

OK I guess no one on here right now prob even knows what I'm talking about when I say an HP Reverse polish notaion eh? Well its simple a term we used in the 90's for the Hewlet Packard high end calclators where you input in rverse of standard calculators.

21. amistre64

you think its 1.3 as the root to the radical instead of a square root?

22. anonymous

yes! 1.3root of 160

23. anonymous

1.3√160

24. anonymous

not 1.3 x √160

25. amistre64

1' 3/10 = 13/10.. 160^(10/13) is the answer to that one then

26. anonymous

huh?

27. amistre64

160^(10 / 13) = 49.6

28. amistre64

29. anonymous

yes 1.3rd root of 160 = 49.5994556

30. amistre64

$\sqrt[a]{b} = b^{1/a}$

31. anonymous

now you get the medal. Thanks! for confirming the first answers given were erronious. Have a great day!!

32. amistre64

$\sqrt[5]{12^2} = 12^{2/5}$

33. amistre64

:) youre welcome

34. amistre64

$\sqrt[1.3]{160}=\sqrt[13/10]{160}=160^{\frac{1}{13/10}}=160^{10/13}$

35. anonymous

but what is (DPN) if (DPN)=A+[B(DR)] DR=18.923 and A,B are Linear Regression Coefficients

36. amistre64

yipes!!.... what math you in that has that?

37. anonymous

or does the A & B require a data set to determine the answer....been to long since Statistics 103

38. anonymous

I'm 20 yrs past College

39. anonymous

that is Statistics

40. amistre64

ahh...im taking intro to stats this semester

41. anonymous

I could do it if I had my old calculator and the cheat sheet I think

42. anonymous

u in HS or College

43. amistre64

college at 40

44. anonymous

oh...LOL I went @ 27

45. anonymous

49 now

46. amistre64

i was a decent carpenter at 27 :) now my bodys broke so im going to colleget o get a masters in math :)

47. anonymous

been trying to figure out the Portsmouth Yardstick # for racing a non standard class sailboat in handi-cap racing

48. anonymous

they have formulas but not much detail on how to use them. I was a Mech Design Major so I only use math whem I have to..LOL and my old collge Calc died 2 yrs ago...guess I should go buy a new one.

49. amistre64

or make a new one :) it wasnt one of those wristwatch calculators was it :)

50. anonymous

lol no...it was a K-mart special...but a decent brand name..don't remember exactly..something like texas instruments or equiv. Couldn't afford an HP @ \$300 while working way thru college. but it worked good enough to get me by with decent grades

51. anonymous

It even had most of the mid to high level Statistics functions so it saved my butt in Statistics..it came with a little instruction booklet on how to use it and it was very detailed on how the formulas worked...like a little cheat sheet....got A's in Stats cause of it.

52. anonymous

You'll have fun in Statistics..not as boring or hard as some make it look. Just remember...no matter how many times you flip a coin and it comes up heads, the odds it will be heads on the next flip is stil 50%....Statistics Trick ??? some instructors like to use.

53. amistre64

:) thnx and good luck