यदि (2x+ky=18) और (x+y=7) का हल (x=4,\ y=3) है, तो (k) का मान क्या है?
If (2x+ky=18) and (x+y=7) have solution (x=4,\ y=3), what is the value of (k)?
Explanation opens after your attempt
C. \(\frac{10}{3}\)
Concept
Put (x=4,\ y=3) in (2x+ky=18). Then (8+3k=18), so \(k=\frac{10}{3}\).
Why this answer is correct
The correct answer is C. \(\frac{10}{3}\). Put (x=4,\ y=3) in (2x+ky=18). Then (8+3k=18), so \(k=\frac{10}{3}\).
Exam Tip
(x=4,\ y=3) को (2x+ky=18) में रखें। (8+3k=18), इसलिए \(k=\frac{10}{3}\)।
Login to save your score, XP, coins and progress.
