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

Solve the inequality (-8<2x+4\leq 12).

Answer and explanation

Correct answer: (-6<x\leq 4)

The direct answer is A: \(-6<x\leq4\). Begin with \(-8<2x+4\leq12\). Subtract 4 from every part, preserving the inequality directions: \(-12<2x\leq8\). Divide every part by the positive number 2, so the signs do not reverse: \(-6<x\leq4\). Option A matches exactly. Option B changes the strict lower boundary into \(-6\leq x\), wrongly including \(-6\). Option C has boundaries -4 and 6, which do not result from the calculation. Option D has boundaries -2 and 8, also incorrect. The lower endpoint is open because the original lower sign is strict, while the upper endpoint is closed because the original upper sign is inclusive. If division were by a negative number, signs would reverse, but that does not happen here. Memory cue: subtract first, divide by positive 2, and keep the open/closed signs.

Related tags

Linear InequalitiesIntroductionClass 11

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.