यदि (Q(t)=160-5t), तो (Q(2)+Q(12)) किस एक (Q(k)) के दोगुने के बराबर है?
If (Q(t)=160-5t), (Q(2)+Q(12)) is equal to twice which (Q(k))?
Explanation opens after your attempt
B. (Q(7))
Concept
In a linear model the midpoint of (2) and (12) is (7). Therefore (Q(2)+Q(12)=2Q(7)).
Why this answer is correct
The correct answer is B. (Q(7)). In a linear model the midpoint of (2) and (12) is (7). Therefore (Q(2)+Q(12)=2Q(7)).
Exam Tip
रेखीय मॉडल में (2) और (12) का मध्य (7) है। इसलिए (Q(2)+Q(12)=2Q(7)) होता है।
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