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3 years ago

A recent poll of 1971 home owners in West Virginia showed that the average price of a house in the U.S. is $319,000

Mathematics

1 answer:

siniylev [52]3 years ago

3 0

Answer:

A) Sample statistic

Step-by-step explanation:

A sample statistic is a number computed from values that belongs to a sample, to represent a whole population.

In this case the sample is the home owners in West Virginia that respond this poll in 1971, and the population is U.S.

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How would you solve 7w+12-2w=-3?

Igoryamba

Answer:

Step-by-step explanation:

Collect all variables in one side and numbers on the other side

7w-2w=-3-12

5w=-15

W=-15/5=-3

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3 years ago

What is 100 rouned to the nearest thousandths

poizon [28]

Answer:

Step-by-step explanation:

Rounding down from 100 to the nearest thousand is 0.

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3 years ago

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Plssss help (the answer choices are the same for all)

Lilit [14]

1) x < 8/3
2) x > -9
3) Infinite Solutions
4) No Solution

Please correct me if I’m wrong. Hope this helps!

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2 years ago

Divide.<br> Write your answer in simplest form.<br> -6/7 divided by (-5/4) =?

yulyashka [42]

Answer:

$\sf \dfrac{24}{35}$

Step-by-step explanation:

Use KCF method for fraction division.

Keep the first fraction.
Change the division operation to multiplication.
Flip the second fraction.

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1 year ago

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) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle

Fynjy0 [20]

The surface (call it $S$ ) is a triangle with vertices at the points

$x=0,y=0\implies z=2\implies(0,0,2)$

$x=0,y=2\implies z=-2\implies(0,2,-2)$

$x=2,y=0\implies z=-8\implies(2,0,-8)$

Parameterize $S$ by

$\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)$

with $0\le u\le1$ and $0\le v\le1$ . Take the normal vector to $S$ to be

$\vec s_v\times\vec s_u=(20v,8v,4v)$

Then the flux of $\vec F$ across $S$ is

$\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^1\int_0^1(6-6v,2v-2uv,-8+6v+4uv)\cdot(20v,8v,4v)\,\mathrm du\,\mathrm dv$

$=\displaystyle8\int_0^1\int_0^1(11v-10v^2)\,\mathrm du\,\mathrm dv=\boxed{\frac{52}3}$

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3 years ago