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

Which is the correct interval for \(\frac{2x+1}{5}<3\)?

Answer and explanation

Correct answer: \(( -\infty,7)\)

In \(\frac{2x+1}{5}<3\), 5 is positive, so multiplying both sides by 5 does not reverse the inequality: \(2x+1<15\). Thus, \(2x<14\), giving \(x<7\). Since the inequality is strict, 7 is not included; the correct interval is \(( -\infty,7)\). The interval \(( -\infty,7]\) is incorrect because it includes 7. Exam tip: use a round bracket for \(<\) or \(>\), and a square bracket for \(\leq\) or \(\geq\).

Related tags

Linear InequalitiesInterval NotationNumber LineStrict InequalityAlgebraRepresentation On Number LineMathematicsClass 11 Mcq

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.