If ⅓y = 9; then y =?

Mathematics

2 answers:

Semmy [17]2 years ago

7 0

The answer is 27. We plug in 9 for y and get the equation 1/3(9). 1/3 times 9 equals 27.

Svetach [21]2 years ago

4 0

<u>Answer:</u>

<u>Eexplanation:</u>

1/3y = 9

y/3 = 9

y = 9 × 3

y = 27

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A company manufactures televisions. The average weight of the televisions is 5 pounds with a standard deviation of 0.1 pound. As

Semenov [28]

Answer:

$0.2564\text{ pounds}$

Step-by-step explanation:

The 90th percentile of a normally distributed curve occurs at 1.282 standard deviations. Similarly, the 10th percentile of a normally distributed curve occurs at -1.282 standard deviations.

To find the $X$ percentile for the television weights, use the formula:

$X=\mu +k\sigma$ , where $\mu$ is the average of the set, $k$ is some constant relevant to the percentile you're finding, and $\sigma$ is one standard deviation.

As I mentioned previously, 90th percentile occurs at 1.282 standard deviations. The average of the set and one standard deviation is already given. Substitute $\mu=5$ , $k=1.282$ , and $\sigma=0.1$ :