Mixed format: $$E _ { L I N E } = \sqrt { E_ R ^ { 2 } + E_ X ^ { 2 } }$$ (with a space between the whole number and the numerator) Fraction format: $1 /4$
Reduce all fractions. A motor brush is $$\begin{aligned}
Z = \frac { E } { I } \quad \text { where } & Z = \text { impedance in ohms } \
& E = \text { voltage in volts } \
I & = \text { current in amperes }
\end{aligned}$$ inches long. How long is it after $49 / 64$ wears away?

Question

Mixed format: $$E _ { L I N E } = \sqrt { E_ R ^ { 2 } + E_ X ^ { 2 } }$$ (with a space between the whole number and the numerator) Fraction format: $1 /4$
 Reduce all fractions. A motor brush is $$\begin{aligned}
Z = \frac { E } { I } \quad \text { where } & Z = \text { impedance in ohms } \
& E = \text { voltage in volts } \
I & = \text { current in amperes }
\end{aligned}$$ inches long. How long is it after $49 / 64$ wears away?

Quizplus · Accepted Answer

The Answer of Mixed format: $$E _ { L I N E } = \sqrt { E_ R ^ { 2 } + E_ X ^ { 2 } }$$ (with a space between the whole number and the numerator) Fraction format: $1 /4$
 Reduce all fractions. A motor brush is $$\begin{aligned}
Z = \frac { E } { I } \quad \text { where } & Z = \text { impedance in ohms } \
& E = \text { voltage in volts } \
I & = \text { current in amperes }
\end{aligned}$$ inches long. How long is it after $49 / 64$ wears away?

Mixed Format ELINE=ER2+EX2E _ { L I N E } = \sqrt { E_ R ^ { 2 } + E_ X ^ { 2 } }ELINE​=ER2​+EX2​​

Mixed Format $E _ { L I N E } = \sqrt { E_ R ^ { 2 } + E_ X ^ { 2 } }$