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bekas [8.4K]
3 years ago
13

6x7x6x9 this one is for you

Mathematics
1 answer:
Papessa [141]3 years ago
8 0

Answer:HOPE THIS HELPS! :D

2268

Step-by-step explanation:

6x7=42

42x6=252

252x9=2268

so, 6x7x6x9=2268

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The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilo-w
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Answer:

a) 471.5 kilo-watt hours.

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Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the population:

Mean 471.5 kilo-watt hours.

Standard deviation of 187.9 kilowatt-hours.

For the sample:

Sample size of 35, by the Central Limit Theorem:

a) Mean

471.5 kilo-watt hours.

b) Standard deviation

s = \frac{187.9}{\sqrt{35}} = 31.76

31.76 kilo-watt hours

7 0
3 years ago
a square has a perimeter given by the expression 16x + 32y . Write an expression for the length of one side of the square
Lady_Fox [76]
Perimeter=4*side so 

side=p/4 and we are told p=16x+32y so

s=(16x+32y)/4

s=4x+8y

s=4(x+2y)
8 0
3 years ago
Please hurry..........
Montano1993 [528]

Answer:

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Step-by-step explanation:

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3 years ago
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weqwewe [10]

Answer:

53/405

Step-by-step explanation:

5 0
3 years ago
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