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Ghella [55]
3 years ago
11

A report says that "the median credit card debt of American households is zero."

Mathematics
1 answer:
kotykmax [81]3 years ago
4 0
Usually the median is defined by the middle number, so without any doubts I can say that due to the fact that half of population has zero effect the overall index is zero. Hope it is clear that the last ( D.The median debt is zero because more than half of credit card debts are zero.) option is the only correct answer whereas the others ones are wrong.
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Answer:

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Step-by-step explanation:

(x+y+z)(xy+xz+yz)=18 Equation 1

x^2(y+z)+y^2(x+z)+z^2(x+y)=6 Equation 2

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Let's expand equation 1:

(x+y+z)(xy+xz+yz)=18

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So let's see what happens if we gather the terms together that have the same variable squared together.

x^2y+x^2z+y^2x+y^2z+z^2y+z^2x+xyz+xyz+xyz=18

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x^2(y+z)+y^2(x+z)+z^2(y+x)+xyz+xyz+xyz=18

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