Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If (Q(t)=160-5t), (Q(2)+Q(12)) is equal to twice which (Q(k))?

Answer and explanation

Correct answer: \(Q(7)\)

Since this is a linear function, the average of the function values at two inputs equals the function value at their midpoint. The midpoint of 2 and 12 is 7. Checking directly, \(Q(2)=150\) and \(Q(12)=100\), so \(Q(2)+Q(12)=250\). Also, \(Q(7)=125\), hence \(2Q(7)=250\). Therefore, \(Q(7)\) is correct. \(Q(6)\) is close, but \(2Q(6)=260\). Exam tip: for a linear function, first find the average of the two input values in questions of this form.

Related tags

Linear FunctionLinear DecayMidpoint PropertyPolynomialsAlgebraic ExpressionsLinear Growth And DecayIntroduction To PolynomialsMathematics

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.