KE8717504
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.



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completeidiot
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did you try drawing a picture?

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

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

KE8717504
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Ok so what's next?

Algebraic!
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so you have an equation for b and h

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

KE8717504
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Ok..

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

KE8717504
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I have no clue lol

KE8717504
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i get lost on these problems

Algebraic!
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if b is 6 what is h?

KE8717504
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10

Algebraic!
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because 10 is 10 more than 6?

KE8717504
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yes

Algebraic!
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what's 6 plus 10

KE8717504
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16

Algebraic!
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so 16 is 10 more than 6

Algebraic!
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if b=6 h=16

Algebraic!
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if b=7 h=?

KE8717504
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16

KE8717504
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?

Algebraic!
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because 16 is 10 more than 7...

KE8717504
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so my answer is 7, 16

Algebraic!
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this was fun.

KE8717504
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the computer again said that was wrong?

KE8717504
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??

Denebel
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dw:1347073516029:dw

KE8717504
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so what is my answer?

KE8717504
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for the base and heig

KE8717504
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t?

Denebel
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You have to solve for x.

KE8717504
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X(x+10) / 2??

KE8717504
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now?

Agent47
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Good job Denebel. KE, if you can't follow simple instructions, nobody will help you. Nobody is just going to post the answer.

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

KE8717504
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Yes but it comes out to be like a square root.. I'm not stupid or anything

Algebraic!
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prove it.

KE8717504
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prove what?

Algebraic!
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wow.

KE8717504
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Um excuse me Mrs. wrong answer giver Algebraic I can block u also...

Denebel
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Ok, what did you do so far?

KE8717504
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when I divided the equation u told me to divide i got 2 big square roots

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

KE8717504
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I'm not even sure if i worked it right? I put it in my calcuator

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

KE8717504
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Intermediate.

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

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

KE8717504
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Have u ever used a graphing calucator?? u can type that in to that

completeidiot
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what did you get for a base?

KE8717504
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Yes the particular subject is intermediate math i believe i said that

KE8717504
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I don't even know now people are making me mad on here tonight

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

KE8717504
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ok

completeidiot
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sorry for above
shouldve check this sooner

KE8717504
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huh?

Denebel
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dw:1347075231860:dw

KE8717504
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duh ok i already knew that.... ...... but is that my base or height????

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

KE8717504
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Ok did i just not solve this same one though?

Denebel
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Which other equation did you solve?

KE8717504
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I thought i just solved this one

KE8717504
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x=18,8 ???? is that right

completeidiot
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well the base cant be negative
so just x=8

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

KE8717504
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so my base is 8 and my height is 18???

Algebraic!
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so much fail.

KE8717504
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what?

Denebel
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Oops typo there, I mean CAN'T

KE8717504
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Denebel u have me lost...

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

KE8717504
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so my base is 18 and my height is 10?

Denebel
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@completeidiot Also has to satisfy A=72

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

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

Denebel
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LOL Yes @KE8717504 , completeidiot is correct

KE8717504
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THANK YOU SO MUCH @completeidiot

KE8717504
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@Denebel i'm starting to wonder if u know what ur doing.. and u are very confusing.