Round your answer to two decimal places.
-$\mathrm { x }$ varies inversely as $\mathrm { v }$, and $\mathrm { x } = 42$ when $\mathrm { v } = 9$. Find $\mathrm { x }$ when $\mathrm { v } = 54$.
A) 7
B) 63
C) 6
D) 81

Question

Quizplus · Accepted Answer

Since x varies inversely as v, we have $ x \cdot v = k $ for some constant k. Given $ x = 42 $ when $ v = 9 $, we find $ k = 42 \cdot 9 = 378 $. When $ v = 54 $, $ x = \frac{378}{54} = 7 $.

Round Your Answer to Two Decimal Places x\mathrm { x }x

Round Your Answer to Two Decimal Places $\mathrm { x }$