jalenevoyles
31.07.2019 •
Mathematics
Abag of marbles contains 5 red, 7 white and 8 blue marbles. what is the probability that 2 are the same color?
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Ответ:
Ответ:
a = -86.
Step-by-step explanation:
By the Factor Theorem, if x + 4 is a factor then P(-4) = 0, so:
P(-4) = 2(-4)^3 - 11(-4)^2 + a(-4)- 40 = 0
-128 - 176 - 4a - 40 = 0
-4a = 128 +176 + 40
-4a = 344
a = -86.