El punto \( (2 .-3) \) es un vértice común de cuatro cuadrados cuyos lados miden 2 unidades y son paralelos a los ejes coordenados del plano cartesiano. ¿Cuál de las siguientes coordenadas podria corresponder a un vértice de alguno de los cuadrados? A) \( (2 .-2) \) B) \( (4 .-5) \) C) \( (-1 .-3) \) D) \( (2.1) \)

How many mg of iron ( \( \mathrm{MM}=55.845 \mathrm{~g} / \mathrm{mol}) \) are in 15.00 mL of a solution that contains \( 2.130 \mathrm{mg} \mathrm{Fe} / \) liter? Report your answer to the correct number of significant figures-in standord notation (Le.- not scientific notation). Omit the units.

Jika \( A=\left[\begin{array}{lll}1 & 2 & 0 \\ 3 & 4 & 2\end{array}\right] \) dan \( B=\left[\begin{array}{ll}4 & 2 \\ -1 & 1 \\ 0 & 0\end{array}\right] \operatorname{maka}(B A)^{T}=\ldots \ldots \ldots \ldots \)

Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience. An education researcher randomly selects 48 middle schools and interviews all the teachers at each school.

Consider the functions \( f(x)=x^{3}-3 \) and \( g(x)=\sqrt[3]{x+3} \). (a) Find \( f(g(x)) \). (b) Find \( g(f(x)) \). (c) Determine whether the functions \( f \) and \( g \) are inverses of each other.

Use technology to construct the confidence intervals for the population variance \( \sigma^{2} \) and the population standard deviation \( \sigma \). Assume the sample is taken from a normally distributed population. \( c=0.99, s^{2}=24.01, n=30 \)