6x – 5y + 11 = 0, 15x + ky – 9 = 0 എന്നീ സമവാക്യങ്ങൾക്ക് പരിഹാരമില്ലെങ്കിൽ, k യുടെ മൂല്യം ഇതാണ്:

This question was previously asked in
RRB ALP Previous Paper 17 (Held On: 21 Aug 2018 Shift 3)
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  1. -12.5
  2. 12.5
  3. -18
  4. 18

Answer (Detailed Solution Below)

Option 1 : -12.5
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രണ്ട് സമവാക്യങ്ങൾക്ക് പരിഹാരമില്ലാത്തപ്പോൾ, സമവാക്യങ്ങളുടെ സമാന്തര സംവിധാനം ഉപയോഗിച്ച്,

അപ്പോൾ,

⇒ 6/15 = -5/k

⇒ k = -25/2

⇒ k = -12.5

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