8 multiplied by 3/4 divided by 3/3

1 answer:

5 0

8 * 3/4

Multiply 8 by 4 to get 32 then divide 32 by 3 to get 3.6 repeating

3/3 is basically 1 so its still 3.6

3.6 is 3 3/5

-XCalypso

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Round the following number to the nearest tens and hundreds

asambeis [7]

Answer: 1.) 57342

Tens = 57340

Hundreds = 57300

2.) 76564

Tens = 76560

Hundreds = 765600

3.) 95634

Tens = 95630

Hundreds = 95600

4.) 85756

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Hundreds = 85800

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Step-by-step explanation:

3 0

1 year ago

A consumer survey indicates that the average household spendsμ= $185on groceries each week. The distribution of spending amounts

Vitek1552 [10]

Answer:

$P(X>200)=P(\frac{X-\mu}{\sigma}>\frac{200-\mu}{\sigma})=P(Z>\frac{200-185}{25})=P(Z>0.6)$

And we can find this probability using the complement rule and with the normal standard table or excel:

$P(Z>0.6)=1-P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the average household spent of a population, and for this case we know the distribution for X is given by:

$X \sim N(185,25)$