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Luba_88 [7]
3 years ago
7

Find the sum. 5(−3.4k−7)+(3k+21)

Mathematics
1 answer:
prohojiy [21]3 years ago
7 0
The answer should be -14 · (k + 1) if u simplify 17/5 and then rewrite the whole as a equivalent fraction and pull out like terms
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A bag contains 6 red balls and 3 blue balls. 4 balls are selected at random. find the probability of selecting 4 red balls.
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Assuming that the balls are not replaced; 

\frac{6}{9}* \frac{5}{8}* \frac{4}{7}* \frac{3}{6}= 5/42 

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Therefore, the probability of selected 4 red balls consecutively without replacement is 5/42. 

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Step-by-step explanation:


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