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3 years ago

2. Déla compró un vestido en la venta del 20% ella pago $57.60 por su vestido

Mathematics

1 answer:

ikadub [295]3 years ago

3 0

Answer:

Step-by-step explanation:

El precio original del vestido es,

72 dolares

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Answer: C.5

The answer is 5.

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The stones that make up Stonehenge in England are shaped roughly like rectangular prisms. The average stone in the outer circle

AnnyKZ [126]

find 1/2 then add the two base the multiply the h and divide by two

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3 years ago

Help me I need help I need help

Licemer1 [7]

Answer:

$\Huge\boxed{131.88}$

Step-by-step explanation:

Hello There!

First thing we want to do is find the formula for circumference of a circle

C = 2(3.14)r

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42/2=21 so the radius equals 21 inches

now we just plug in 21 for r in the formula

$C = 2(3.14)21\\2*3.14=6.28\\6.28*21=131.88\\C=131.88$

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3 years ago

Answers...............

umka21 [38]

Answer: Two acute angles

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3 years ago

Find the standard deviation of 21, 31, 26, 24, 28, 26

Vesnalui [34]

Given the dataset

$x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}$

We start by computing the average:

$\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26$

We compute the difference bewteen each element and the average:

$x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}$

We square those differences:

$(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}$

And take the average of those squared differences: we sum them

$\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69$

And we divide by the number of elements:

$\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5$

Finally, we take the square root of this quantity and we have the standard deviation:

$\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39$

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3 years ago