Find the basis and dimension of the subspace span

dd by the vectors (2,-3,1), (3,0,1) and (1,1,1)

arsh arsh
2022-06-07

Find the basis and dimension of the subspace span

dd by the vectors (2,-3,1), (3,0,1) and (1,1,1)

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asked 2020-12-30

A majorette in a parade is performing some acrobatic twirlingsof her baton. Assume that the baton is a uniform rod of mass 0.120 kg and length 80.0 cm.

With a skillful move, the majorette changes the rotation ofher baton so that now it is spinning about an axis passing throughits end at the same angular velocity 3.00 rad/s as before. What is the new angularmomentum of the rod?

asked 2022-06-07

what statistic would you use if you had one independent variable, geographic location (north, south, east, west), and one dependent variable (satisfaction with the living environment, yes or no)?

asked 2022-02-17

Make use of vectors to re-write the following second order differential equation into a 1st order differential equation. (note: I do not need to solve it).

$2.1{x}^{-2}\frac{{d}^{2}y}{{dx}^{2}}-3{e}^{2x}{y}^{4}\frac{dy}{dx}=-6y$

where$y=4.2$ and $\frac{dy}{dx}=-3.1$ when $x=0.5$ .

Im not sure were to begin any help is greatly appreciated.

where

Im not sure were to begin any help is greatly appreciated.

asked 2022-05-09

A political pollster selects a random sample of 75 registered voters from Allegheny County, Pennsylvania. The city of Pittsburgh is in Allegheny County. The pollster is interested in determining if the distribution of political party preference among registered voters in this county differs between those who live in Pittsburgh and those who live in the suburbs. The responses are displayed in the table.

The pollster would like to know if these data provide convincing evidence of a relationship between residential status and political party in the population of all registered voters in Allegheny County. The random and 10% conditions are met, and this table of expected counts shows that all expected counts are at least 5.

What is the value of the chi-square test statistic for this test?

*χ*‑2 = 2.64

*χ*‑2 = 2.83

*χ*‑2 = 6.95

*χ*‑2 = 8.03

asked 2021-10-08

Derivatives Find and simplify the derivative of the following functions

$f\left(t\right)={t}^{\frac{5}{3}}{e}^{t}$

asked 2022-01-07

I have the multivariable function

$\mathrm{log}({y}^{2}+4{x}^{2}-4)$

and I have found the maximal domain to be

${x}^{2}+\frac{{y}^{2}}{4}>1$

and I have found the maximal domain to be

asked 2021-02-08

A population of values has a normal distribution with $\mu =73.1$ and $\sigma =28.1$ . You intend to draw a random sample of size $n=131$ .

Find the probability that a sample of size$n=131$ is randomly selected with a mean greater than 69.7.

$P\left(M>69.7\right)=$ ?

Write your answers as numbers accurate to 4 decimal places.

Find the probability that a sample of size

Write your answers as numbers accurate to 4 decimal places.