vcasela
13.03.2020 •
Mathematics
I need some help please!
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Ответ:
i would say a₁ = 1 and r = 3
Step-by-step explanation:
sorry if it is wrong
Ответ:
A=LW, and using L from above this becomes:
A=(W+5)W
A=W^2+5W and we are told A=1800 so:
W^2+5W=1800
W^2+5W-1800=0 factor
W^2+45W-40W-1800=0
W(W+45)-40(W+45)=0
(W-40)(W+45)=0 Since length cannot have a negative value in this problem (because it would have no meaning)
W=40m, and we were told L=W+5, L=45m