Mathematics, 22.11.2021 14:00 xthatshepoxy
let a be directly proportional to m and n^2, and inversely proprotional to y^3. if a =9 when m=16, n=9 and y=3, find a when m=7, n=4, and y=5
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Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
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Varies inversely with x. if y=8.5 when x=-1 find x when y=-1
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let a be directly proportional to m and n^2, and inversely proprotional to y^3. if a =9 when m=16, n...
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