Mathematics Answer, Explanation and Revision Hints
यदि (D(t)=72-9t), तो (t) में (1) बढ़ने पर (D(t)) कितना घटेगा? / If (D(t)=72-9t), by how much will (D(t)) decrease when (t) increases by (1)?
Correct Answer: A. (9). Explanation: गुणांक (-9) है इसलिए मान हर चरण में (9) घटता है। घटने की मात्रा धनात्मक रूप में (9) है। / The coefficient is (-9), so the value decreases by (9) each step. The amount of decrease is (9) in positive form.
Which concept should I revise for this Mathematics MCQ?
The coefficient is (-9), so the value decreases by (9) each step. The amount of decrease is (9) in positive form.
What exam hint can help solve this Mathematics question?
गुणांक (-9) है इसलिए मान हर चरण में (9) घटता है। घटने की मात्रा धनात्मक रूप में (9) है।
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