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Mathematics 16 Online
OpenStudy (anonymous):

@superhelp101

OpenStudy (anonymous):

i'm sorry I had to drag attention but for some reason I can't reply to your message. it won't send. Anyways my reply was yes I can help you

OpenStudy (superhelp101):

yay ok Megan's backyard has a small pond that is 15 feet by 10 feet. Her mother wants her to add a wooden deck pathway around the pond, so that the total area of the pool and deck is 234 ft2. How wide does the pathway need to be to fulfill Megan's mom's request?

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

so sorry about that. i had to switch from my phone to my laptop

OpenStudy (anonymous):

ok

OpenStudy (superhelp101):

no its fine

OpenStudy (anonymous):

start with (x+15)(x+10)

OpenStudy (anonymous):

(x+15)(x+10)=234 ft right?

OpenStudy (anonymous):

then you factor it out

OpenStudy (anonymous):

x^2+10x+15x+150=234

OpenStudy (superhelp101):

thats what I got. But someone said (2x+15)(2x+10)?

OpenStudy (anonymous):

who?

OpenStudy (superhelp101):

aum

OpenStudy (anonymous):

subtract 234 to the other side

OpenStudy (anonymous):

you'll get x^2+25x-84=0

OpenStudy (superhelp101):

ohh

OpenStudy (anonymous):

then x^2+25x+125/4-84=125/4

OpenStudy (anonymous):

(x+25/2)^2= 84+125/4

OpenStudy (superhelp101):

Ok I got it ! :) thx!

OpenStudy (anonymous):

with me so far?

OpenStudy (anonymous):

well anyways..................you get x=-28,3. Since you can't have neg. lengths 3 is your answer

OpenStudy (superhelp101):

yep

OpenStudy (anonymous):

new dimensions would be 18ft by 13 ft

OpenStudy (anonymous):

do you understand how i got 3 ft for the pathway?

OpenStudy (superhelp101):

is what they did similar to what do did https://answers.yahoo.com/question/index?qid=20101206155235AALFzLd

OpenStudy (superhelp101):

yes I understand

OpenStudy (superhelp101):

because I am really stuck on if it would be just x or 2x

OpenStudy (anonymous):

well its x. IDK why aum said 2x

OpenStudy (aum):

The pathway is all around the pond. So the width of the pathway is 1.5 feet and not 3 ft.

OpenStudy (superhelp101):

aum I'm sorry to bother you but I am really stuck and I want to get this question right lol

OpenStudy (anonymous):

@aum read the end of the problem:How wide does the pathway need to be to fulfill Megan's mom's request?

OpenStudy (anonymous):

trust me its 3 feet

OpenStudy (aum):

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