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 2 years ago
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
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.

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

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

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

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

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

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

KE8717504
 2 years ago
Best 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

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

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

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

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

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

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

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

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

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

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