Find x and y with only 13.1

Mathematics

1 answer:

sdas [7]4 years ago

4 0

Answer:

x= 45

y= 18.5 (3 s.f.)

Step-by-step explanation:

Since the quadrilateral has 4 equal sides, it is a square and hence the 4 angles are right angles.

I have drawn the 2 triangles of the square separately for better understanding.

Please see the attached pictures for full solution.

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414 is 45% of what number

STatiana [176]

Answer:

920

Step-by-step explanation:

Why? Becuase take 45% and convert it into decimal form

45%--->0.45

Then take 920

920 × 0.45

414

So we know that 414 is 45% of 920!

And That is your answer!

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7 0

3 years ago

You are given a set of data with a mean of 50 and standard deviation of 8. Using the normal curve, give an example of an outlier

Tatiana [17]

Answer:

Anything less than 26, and greater than 74.

Step-by-step explanation:

In normal distribution, the outlier is more than e ≈ 2.72 standard deviations above quartile 3, and e standard deviations below quartile 1. These quartiles are divisions that make up what is known as the innerquartile range(IQR). Which defines the variability of a data set given by IQR = Q3-Q1.

Given that the mean of this data is 50, and the standard deviation is 8.

Our outliers are anything less than 26, and anything greater than 74. Since outliers are anything outside the mean plus and minus the standard deviation times 3

$outliers :/ = :/ mean :/ \pm$