Asked by adeyeni
the cost of building lawn xmetre long varies partly as x and partly as xsquare.The lawn cost #180 if it 30metre long and #280 if it 40metre.How long is a lawn if it cost #4000 to build.
Answers
Answered by
Steve
c = hx + kx^2
180 = 30h + 900k
280 = 40h + 1600k
h = 3
k = .1
c = 3x + .1x^2
4000 = 3x + .1x^2
x = 185.5
180 = 30h + 900k
280 = 40h + 1600k
h = 3
k = .1
c = 3x + .1x^2
4000 = 3x + .1x^2
x = 185.5
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.