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Linear Equations — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSLinear Equations3 Marks
Question
Solve the following equations for the unknown: $7-\frac{1}{\sqrt{y}}=0$
✓

Answer

$7-\frac{1}{\sqrt{y}}=0 $
$\Rightarrow 7=\frac{1}{\sqrt{y}}$
Squaring both sides
$\Rightarrow(7)^2=\frac{1}{y} $
$\Rightarrow 49=\frac{1}{y} $
$\Rightarrow y=\frac{1}{49} .$

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