Related Questions

A teacher asked the class to subtract 5 from 75.70% of the class said: 25. Their work was shown as: \(\begin{array}{*{20}{c}} {\begin{array}{*{20}{c}} 7&5 \end{array}}\\ {\underline {\begin{array}{*{20}{c}}\ { - 5} \ \ \ &{} \end{array}} }\\ {\underline {\begin{array}{*{20}{c}} 2&5 \end{array}} } \end{array}\) Which of the following describes the most appropriate remedial action that the teacher should take to clarify this misconception?
To an addition problem, \(\begin{equation} \frac{ \begin{array}[b]{r} 56 \\ +38 \end{array} }{ } \end{equation}\)  a class 2 student responded as \(\begin{equation} \frac{ \begin{array}[b]{r} 56\\ +38 \end{array} }{ 84 } \end{equation}\)As a reflective mathematics teacher, what will be your reaction to the child's answer? 
What will be the output of the following PHP code ?
A classical particle is moving in an external potential field V(x, y, z) which is invariant under the following infinitesimal transformations
\[\begin{array}{*{20}{c}} {x \to x'}& = &{x + \delta x} \\ {y \to y'}& = &{y + \delta y} \\ {\left[ {\begin{array}{*{20}{c}} x \\ y \end{array}} \right