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mr.luna
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the altitude of a triangle is increasing at a rate of 1 cm/min while the area in increasing at a rate of 2 cm^2/min. At what rate is the base of the triangle changing when the altitude is 10 cm and the area is 100cm^2?
 2 years ago
 2 years ago
mr.luna Group Title
the altitude of a triangle is increasing at a rate of 1 cm/min while the area in increasing at a rate of 2 cm^2/min. At what rate is the base of the triangle changing when the altitude is 10 cm and the area is 100cm^2?
 2 years ago
 2 years ago

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shanna Group TitleBest ResponseYou've already chosen the best response.0
S= 1/2b*h dS = 1/2(h*db+b*dh) dS/dt= 1/2(h*db/dt+b*dh/dt) so 2 =1/2(10 db/dt+b*1) as S=100=1/2 b*10 b=20 so 4= 10db/dt+20 so db/dt = 1.6 cm/min (decreasing)
 2 years ago
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