## anonymous 4 years ago A sailboat sail is triangular with a height 10ft greater than it's base. If the sails area is 72 sq ft, find it's base and height.

1. anonymous

did you try drawing a picture?

2. anonymous

what's the area of a triangle in terms of height and base?

3. anonymous

actually you dont really need a picture A=1/2b*h

4. anonymous

Ok so what's next?

5. anonymous

so you have an equation for b and h

6. anonymous

you need one more equation, since you have two unknowns.

7. anonymous

Ok..

8. anonymous

"a height 10ft greater than it's base." try to write an equation based on that statement

9. anonymous

I have no clue lol

10. anonymous

i get lost on these problems

11. anonymous

if b is 6 what is h?

12. anonymous

10

13. anonymous

because 10 is 10 more than 6?

14. anonymous

yes

15. anonymous

what's 6 plus 10

16. anonymous

16

17. anonymous

so 16 is 10 more than 6

18. anonymous

if b=6 h=16

19. anonymous

if b=7 h=?

20. anonymous

16

21. anonymous

?

22. anonymous

because 16 is 10 more than 7...

23. anonymous

so my answer is 7, 16

24. anonymous

this was fun.

25. anonymous

the computer again said that was wrong?

26. anonymous

??

27. anonymous

|dw:1347073516029:dw|

28. anonymous

29. anonymous

for the base and heig

30. anonymous

t?

31. anonymous

You have to solve for x.

32. anonymous

X(x+10) / 2??

33. anonymous

now?

34. Agent47

35. anonymous

$72=\frac{ 1 }{ 2 }x(x+h)$ Do you know how to solve for x?

36. anonymous

Yes but it comes out to be like a square root.. I'm not stupid or anything

37. anonymous

prove it.

38. anonymous

prove what?

39. anonymous

wow.

40. anonymous

Um excuse me Mrs. wrong answer giver Algebraic I can block u also...

41. anonymous

Ok, what did you do so far?

42. anonymous

when I divided the equation u told me to divide i got 2 big square roots

43. anonymous

? Can you show me the steps? Draw or write it out.

44. anonymous

I'm not even sure if i worked it right? I put it in my calcuator

45. anonymous

If you don't mind me asking, what math are you taking?

46. anonymous

Intermediate.

47. anonymous

Is there a particular subject? On the cover of your textbook? Have you learned about distribution?

48. anonymous

Also, how did you type x(x+10) in your calculator...

49. anonymous

Have u ever used a graphing calucator?? u can type that in to that

50. anonymous

what did you get for a base?

51. anonymous

Yes the particular subject is intermediate math i believe i said that

52. anonymous

I don't even know now people are making me mad on here tonight

53. anonymous

well assuming you have a graphing calculator i put down (1/2)(x(x+10))-72 find when y=0 and got x=8

54. anonymous

ok

55. anonymous

sorry for above shouldve check this sooner

56. anonymous

huh?

57. anonymous

|dw:1347075231860:dw|

58. anonymous

duh ok i already knew that.... ...... but is that my base or height????

59. anonymous

It's nothing, you have to solve for x first. It's just an equation so you find your base and height.

60. anonymous

Ok did i just not solve this same one though?

61. anonymous

Which other equation did you solve?

62. anonymous

I thought i just solved this one

63. anonymous

x=-18,8 ???? is that right

64. anonymous

well the base cant be negative so just x=8

65. anonymous

Measurements of an object can be negative. |dw:1347075538826:dw|

66. anonymous

so my base is 8 and my height is -18???

67. anonymous

so much fail.

68. anonymous

what?

69. anonymous

Oops typo there, I mean CAN'T

70. anonymous

Denebel u have me lost...

71. anonymous

the height was 10 more than the base if the base if 8 8+10 =18 case closed

72. anonymous

so my base is 18 and my height is 10?

73. anonymous

@completeidiot Also has to satisfy A=72

74. anonymous

no... base is 8 height is 18...... 8*18=144 144/2=72 GAHHHHHHHH

75. anonymous

Oops sorry My brain is wacked. I typed it in my calculator wrong.

76. anonymous

LOL Yes @KE8717504 , completeidiot is correct

77. anonymous

THANK YOU SO MUCH @completeidiot

78. anonymous

@Denebel i'm starting to wonder if u know what ur doing.. and u are very confusing.