0 reads0 ratings0 helpful
If (C(t)=24+kt) and (C(7)-C(2)=45), what is (k)?यदि (C(t)=24+kt) और (C(7)-C(2)=45), तो (k) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 99
Given \(C(t)=24+kt\), we have \(C(7)=24+7k\) and \(C(2)=24+2k\). Hence, \(C(7)-C(2)=(24+7k)-(24+2k)=5k\). Since this difference is 45, \(5k=45\), so \(k=9\). If \(k=8\), the difference would be \(5\times8=40\), not 45. Exam tip: when subtracting two values of a linear expression, the constant term 24 cancels out.दिया है, \(C(t)=24+kt\)। अतः \(C(7)=24+7k\) और \(C(2)=24+2k\)। इसलिए \(C(7)-C(2)=(24+7k)-(24+2k)=5k\)। चूँकि यह अंतर 45 है, \(5k=45\), इसलिए \(k=9\)। विकल्प 8 लेने पर अंतर \(5\times8=40\) आता, जो 45 नहीं है। परीक्षा टिप: रैखिक व्यंजक के दो मानों का अंतर लेते समय स्थिर पद 24 कट जाता है।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
