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Anarel [89]
3 years ago
6

For the inverse variation equation xy=k, what is the constant of variation,k, when x = -3and y=-2

Mathematics
1 answer:
const2013 [10]3 years ago
8 0

Answer:

6

Step-by-step explanation:

xy=k

Value of k ; when ; x = - 3 and y = - 2

Put x = - 3 and y = - 2 into the equation :

(-3)(-2) = k

-3 * - 2 = k

6 = k

The constant of variation k = 6

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An urn contains 3 red and 7 black balls. Players and withdraw balls from the urn consecutively until a red ball is selected. Fin
Sliva [168]

Correct question:

An urn contains 3 red and 7 black balls. Players A and B withdraw balls from the urn consecutively until a red ball is selected. Find the probability that A selects the red ball. (A draws the first ball, then B, and so on. There is no replacement of the balls drawn).

Answer:

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A selects the red ball if the first red ball is drawn 1st, 3rd, 5th or 7th

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3rd selection: 7C2

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Answer:

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Step-by-step explanation:

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