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trasher [3.6K]
3 years ago
15

Question 18.

Mathematics
1 answer:
DENIUS [597]3 years ago
3 0

Answer: c

Step-by-step explanation:

sampling variability is the difference between the measured value of the random sample and the mean age of the population

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Answer:

x = 3 or x = -1 or x = -2

Step-by-step explanation:

Solve for x:

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x^3 - 7 x - 6 = 0

Hint: | Factor the left hand side.

The left hand side factors into a product with three terms:

(x - 3) (x + 1) (x + 2) = 0

Hint: | Find the roots of each term in the product separately.

Split into three equations:

x - 3 = 0 or x + 1 = 0 or x + 2 = 0

Hint: | Look at the first equation: Solve for x.

Add 3 to both sides:

x = 3 or x + 1 = 0 or x + 2 = 0

Hint: | Look at the second equation: Solve for x.

Subtract 1 from both sides:

x = 3 or x = -1 or x + 2 = 0

Hint: | Look at the third equation: Solve for x.

Subtract 2 from both sides:

Answer:  x = 3 or x = -1 or x = -2

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Step-by-step explanation: Hope this helped!!

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