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3 years ago

QUICK - 70 POINTS! GEOMETRY HOMEWORK

Mathematics

2 answers:

noname [10]3 years ago

7 0

The answer is a^2 = cd

Alright! So you got a/c = d/a

Add the length which is 2 and multiply them a/c x d/a

and you will get a^2 = cd

sukhopar [10]3 years ago

6 0

a/c = d/a

you would cross multiply to get aa = cd

aa = a^2

so you would have a^2 = cd

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IQ scores are normally normally distributed with a mean of 100 and center deviation of 15 if one person is randomly selected wha

Arlecino [84]

Answer:

22.86% probability that the persons IQ is between 110 and 130

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 100, \sigma = 15$

If one person is randomly selected what is the probability that the persons IQ is between 110 and 130

This is the pvalue of Z when X = 130 subtracted by the pvalue of Z when X = 110.

X = 130

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{130 - 100}{15}$

$Z = 2$

$Z = 2$ has a pvalue of 0.9772

X = 110

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{110 - 100}{15}$

$Z = 0.67$

$Z = 0.67$ has a pvalue of 0.7486

0.9772 - 0.7486 = 0.2286

22.86% probability that the persons IQ is between 110 and 130

6 0

3 years ago

In the early months of some year one site added 0.2 million new accounts everyday. At this rate, how many days would be needed t

WITCHER [35]

60 days, I think. Sixty times zero point two is twelve.

3 0

3 years ago

Georgina works on the 30 floor she took an elevator to the 7 floor how many floors did she travel

svlad2 [7]

Georgina walk 23 floor
30 - 7 = 23

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If the measure of arc XY plus the measure of a arc YZX equals 360 and the arcs dont overlapp then what do the arcs form?

gavmur [86]

Check the picture below.

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3 years ago

PLEASSS HELPPPP

Lera25 [3.4K]

Answer:

-11 + 4

Step-by-step explanation:

When you subtract a negative the sign will switch to plus, so it this case you would switch the - (-4) to a + 4 but you don't change the -11 at the front.

6 0

3 years ago