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Dimas [21]
3 years ago
15

Which size random sample is likely to provide the most trustworthy results

Mathematics
1 answer:
Zarrin [17]3 years ago
4 0
At least 30 observations to get a reasonably normal distribution.
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The following quadrilateral is a parallelogram.
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Answer:

12

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By definition, opposite sides of a parallelogram are congruent.

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I need help don’t know how to do
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Let x be the unknown angle.
We know that x+50=120 because the value of an exterior angle of a triangle is equal to the sum of the other 2 interior angles.

x+50 = 120
Subtract both sides by 50
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Please help me with this, I don't get it!
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V_B=2x\cdot2y\cdot4=16xy=120\ cm^3\\
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The answer is c b/c you multiply
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3 years ago
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A family spent $65 on dinner and left a 20% tip. What was the total cost of their meal?
Oxana [17]

Answer: B, $78

Step-by-step explanation:

If the tip is 20% of the dinner cost, then we have to first find what is 20% of 65.

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