Mathematics, 06.09.2021 14:20 rileychas4114
(a) The mean of the masses of a group of four student is 30 kg.
One student joins the group .The mean of the masses of the five students is 32 kg.
Find the mass of the student who joined the group.
(b)The mean of the five articles is 215 g. When another article is added, the mean of the masses of the six articles is 220 g. Find the mass of the sixth article.
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If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?
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(a) The mean of the masses of a group of four student is 30 kg.
One student joins the group .The m...
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