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avanturin [10]
2 years ago
12

Find the value of x such that the data set has the given mean.

Mathematics
2 answers:
kkurt [141]2 years ago
5 0

Answer:

39.1

Step-by-step explanation:

31.7 + 42.8 + 26.4 = 100.9

35 times 4 = 140

140 - 100.9 = 39.1

Sergio039 [100]2 years ago
4 0

Answer:

mean = \frac{31.7+42.8+26.4+x}{4} \\\\35 = \frac{31.7+42.8+26.4+x}{4} \\\\\\35*4 = 31.7+42.8+26.4+x \\\\140 = 100.9 + x\\\\x= 39.1

option 3

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X³ - 9x² + 5x - 45

x²(x - 9) - 5(x - 9) ⇒ x³ - 9x² - 5x + 45 INCORRECT
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It just needs to be rearranged.

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