My teacher wrote “x=x-1”. How is that logically possible?

If I were to guess at the context of the question I would say that the question is asking for all the values of x which satisfy the equation x = x-1 and the answer is that no value of x satisfie…

Top stories for Long   My teacher wrote "x=x-1". How is that logically possible? Gregory Schoenmakers, Engineer and former high school maths teacher. • Updated February 15 If I were to guess at the context of the question I would say that the question is asking for all the values of x which satisfy the equation x = x-1 and the answer is that ... Read more » 4.3K 588   Why was the MD11 that crashed in Louisville unable to take off on 2 engines? Are they not designed to do that? KP Schroer, former Captain: DC3, M404, YS11, DC9, B757, B767 A320 (1981-2020) • Answered November 5 Engine failure on takeoff is one of our most practiced maneuvers. It should have been something the crew could have handled well. Unfortunately, they were flying an MD11. Th... Read more » 1.3K 250   Can you tell me about the dumbest person with a college degree you have ever encountered? Asked in Jokes, Humour & Funny stories 🤣😹🙈😆 • Answered by Bill Palmer • November 10 I had a dean of the psychology department come back from Africa with a video of "Knife less Surgery". He was so amazed at it. I raised my hand and said I was a semi profess... Read more » 145 10   HELL EXISTS AND HAS A NAME Alessandro13 • Posted Mar 9, 2024 What you are seeing is an image of Io, a moon of Jupiter, taken a few days ago during a close pass by the Juno probe. Look carefully... because you are seeing what comes closest to Dante's idea of h... Read more » 1K 302   My friend passed away and left me his life insurance policy. Am I obligated to pay off any of his personal debts? This is in Texas. Poundhph, P.I. Certification Private Investigations, Utah Detective Academy (1995) • Answered October 23 I can answer this. When my father and mother passed. I was the executor of each one's estate. I contacted an attorney for legal advice. He stated. Do not pay for utilities,... Read more » 3.5K 193   I'm pregnant and giving my baby up for adoption when he's born. Someone told me today that I'll have to hold him at the hospital right after birth. Is that true? I don't want to Tanya, lives in Everett, WA (1993-present) • Answered November 8 My best friend made the decision to put the baby she was pregnant with up for adoption. She made this decision soon after learning she was pregnant. She used an adoption ag... Read more » 1.7K 61   Why do liberals like Game of Thrones? Sarah Lynn Johnson, works at Structural Engineering • Answered July 18, 2017 There's a running joke online: Tolkien fans all fantasize about living in Middle Earth with the Elves or the Hobbits! Harry Potter fans all fantasize about going to Hogwarts ... Read more » 1.5K 126   My son just got 50 years in prison. Is he cooked? Bill Pizar, Lifted most of my life. In my 50's n still pump.. • Answered November 3 He needs to stop thinking of the outside world and set up life in prison. I remember meeting a military office who was doing time back in the day. He had absolutely no issue... Read more » 409 160   How would a device as in Honey, I Shrunk the Kids actually work? Is it possible? Silk Road, Lover of Sci-fi • Answered November 8 The biggest fight is physics obviously. That machine in the movie is fantasy - You have to forget reality to enjoy it. Hollywood removed the empty space between atoms. A fine... Read more » 67 8   Where is the Hitler"s grave? Samuel Minzey, B.A History & Political Science, University of Michigan (2022) • Answered January 28, 2018 Only one person on Earth knows, and he will never tell. After Hitler had killed himself, the Nazis ran into his study and found he and his wife dead. Hitler had shot himself... Read more » 3.6K 739   How do I solve 6^x-5^x=11? Bernard Montaron, PhD Mathematics & Discrete Mathematics, Université Pierre Et Marie Curie Paris V... • Answered November 2 Assuming the exponent is an integer, then modulo 11 this becomes [math](-5)^x-5^x=0[/math] which requires [math]x[/math] to be even. Setting [math]x=2n[/math] the equation becomes [math]6^{2n}-5^{2n}=11=(6^n-5^n)(6^n+5^n)[/math] This implies [math]6^n-5^n=1[/math] and [math]6^n+5^n=11[/math] Adding these together yields [math]6^n...[/math] Read more » 17 2   Why is 6'2" (188 cm) often considered the perfect height for human males 20 years and above? Ernest W. Adams, Game design consultant, author and professor • Answered October 19 It's not, in Japan. There it makes you a giant and therefore probably a barbarian. Height expectations are cultural and subjective. 6'2″ is what Western men aspire to, but f... Read more » 1.1K Read more in your feed

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