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anonymous
 4 years ago
Find an equation of variation in which y varies jointly as x and z. y = 7 when x = 7 and z = 1
A. y=x/z
B. y=xz
anonymous
 4 years ago
Find an equation of variation in which y varies jointly as x and z. y = 7 when x = 7 and z = 1 A. y=x/z B. y=xz

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0@Skaematik what about this?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0When we say z is jointly proportional to a set of variables, it means that z is directly proportional to each variable taken one at a time It means they are DIRECTLY PROPORTIONAL. So the answer is

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0thanks! can you help me with one more please? @Skaematik
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