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3 years ago

Which describes the cross section of the cube that passes through the vertices A, B, and C shown below?

Mathematics

2 answers:

Elis [28]3 years ago

6 0

The approximate answer would be letter A as in Ana

nata0808 [166]3 years ago

4 0

It is option D the guy above me is wrong use the formula y=a(b)^x

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I need some help please :)

const2013 [10]

ADC = DAB
CAD = BDA
Answer: DAB, BDA

8 0

3 years ago

Suppose a simple random sample of size 50 is selected from a population with σ=10σ=10. Find the value of the standard error of t

bogdanovich [222]

Answer:

a) $\sigma_{\bar x} = 1.414$

b) $\sigma_{\bar x} = 1.414$

c) $\sigma_{\bar x} = 1.414$

d) $\sigma _{\bar x} = 1.343$

Step-by-step explanation:

Given that:

The random sample is of size 50 i.e the population standard deviation =10

Size of the sample n = 50

a) The population size is infinite;

The standard error is determined as:

$\sigma_{\bar x} = \dfrac{\sigma}{\sqrt{n}}$

$\sigma_{\bar x} = \dfrac{10}{\sqrt{50}}$

$\sigma_{\bar x} = 1.414$

b) When the population size N= 50000

n/N = 50/50000 = 0.001 < 0.05

Thus ; the finite population of the standard error is not applicable in this scenario;

Therefore;

The standard error is determined as:

$\sigma_{\bar x} = \dfrac{\sigma}{\sqrt{n}}$

$\sigma_{\bar x} = \dfrac{10}{\sqrt{50}}$

$\sigma_{\bar x} = 1.414$

c) When the population size N= 5000

n/N = 50/5000 = 0.01 < 0.05

Thus ; the finite population of the standard error is not applicable in this scenario;

Therefore;

The standard error is determined as:

$\sigma_{\bar x} = \dfrac{\sigma}{\sqrt{n}}$

$\sigma_{\bar x} = \dfrac{10}{\sqrt{50}}$

$\sigma_{\bar x} = 1.414$

d) When the population size N= 500

n/N = 50/500 = 0.1 > 0.05

So; the finite population of the standard error is applicable in this scenario;

Therefore;

The standard error is determined as:

$\sigma _{\bar x} = \sqrt{\dfrac{N-n}{N-1} }\dfrac{\sigma}{\sqrt{n} } }$

$\sigma _{\bar x} = \sqrt{\dfrac{500-50}{500-1} }\dfrac{10}{\sqrt{50} } }$

$\sigma _{\bar x} = 1.343$

7 0

3 years ago

3x subtract 5y equal 10

yaroslaw [1]

Is it this??? -2/3 or -0.6 did I answer wrong?

6 0

3 years ago

Find the volume. Please

otez555 [7]

Look at the attached picture

Hope it will be helpful to you....

<h3>Good luck on your assignment</h3>

-pragya~~

3 0

3 years ago

Encuentre el valor de la variable en la siguiente ecuación 4−x7=−8

melisa1 [442]

Answer:

x = 1.71428571429 (1.7)

Step-by-step explanation:

4 - 7x= -8

-4 -4

-7x = -12

/-7 /-7

x = 1.71428571429

x = 1.7

7 0

2 years ago