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Numerical Applications — Applied Maths STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceApplied MathsNumerical Applications1 Mark
MCQ
If $-3x + 17 < - 13,$ then
  • ✓
    $x \in(10, \infty)$
  • B
    $x \in[10, \infty)$
  • C
    $x \in(-\infty, 10)$
  • D
    $x \in[-10,10)$
✓

Answer

Correct option: A.
$x \in(10, \infty)$
(A) $x \in(10, \infty)$
Explanation: Given,
$- 3x + 17 < - 13$
$\Rightarrow$ $- 3x < - 17 - 13$
$\Rightarrow$ $- 3x < - 30$
$\Rightarrow$ $3x > 30$
$\Rightarrow$ $x > 10$
$\Rightarrow$ $x \in(10, \infty)$

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