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KE8717504
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consider the rectangle below. It's area is 5a^2+21ab+4b^2 and it's length is 2a+8b. find it's width w, in terms of a and b, by dividing it's area by it's length.
 2 years ago
 2 years ago
KE8717504 Group Title
consider the rectangle below. It's area is 5a^2+21ab+4b^2 and it's length is 2a+8b. find it's width w, in terms of a and b, by dividing it's area by it's length.
 2 years ago
 2 years ago

This Question is Closed

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
dw:1347684283899:dw
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
@jim_thompson5910
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
what do you have so far
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
I'm just not sure how to work this.
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
or how to go about starting it?
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
Use the idea that Area = Length * Width or A = LW Solve for W W = A/L
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
Then make the proper substitutions. Then divide and simplify.
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
@jim_thompson5910 this is what i get when i do that. 2ab^2+5a^2+21ab+8b
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
That is diving the Area by the length
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
simplify (5a^2+21ab+4b^2)/(2a+8b)
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
would that make my width?
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
Can you factor 5a^2+21ab+4b^2 at all?
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
yes into (a+4b)(5a+1b) right?
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
but u still get the same answer right 5a+b/2 right?
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
@jim_thompson5910
 2 years ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.0
It's right.
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
Did you mean \[\Large \frac{5a+b}{2}\] ?
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
@jim_thompson5910 yea
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.1
then yes, you are correct
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
I should get a learners metal on that one :0
 2 years ago

KE8717504 Group TitleBest ResponseYou've already chosen the best response.1
Thanks !!
 2 years ago
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