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Author: Tinku Tara

A-man-invite-5-friends-choosen-from-10-for-a-diner-He-don-t-want-that-two-of-them-took-part-to-that-diner-The-number-of-ways-to-choose-her-friends-is-a-296-b-196-c-5-d-252-

Question Number 139741 by mathocean1 last updated on 30/Apr/21 $${A}\:{man}\:{invite}\:\mathrm{5}\:{friends}\:{choosen} \\ $$$${from}\:\mathrm{10}\:{for}\:{a}\:{diner}.\:{He}\:{don}'{t}\: \\ $$$${want}\:{that}\:{two}\:{of}\:{them}\:{took}\:{part} \\ $$$${to}\:{that}\:{diner}.\:{The}\:{number}\:{of} \\ $$$${ways}\:{to}\:{choose}\:{her}\:{friends}\:{is}: \\ $$$$\left.{a}\right)\mathrm{296} \\ $$$$\left.{b}\right)\mathrm{196} \\ $$$$\left.{c}\right)\mathrm{5} \\…

A-rectangular-blade-ABCD-is-hanged-up-on-A-If-AB-2-m-AD-3m-the-angle-between-AD-and-the-verticale-when-the-system-is-equilibred-is-a-56-3-b-Arcsin-2-3-c-41-8-d-33-7-

Question Number 139740 by mathocean1 last updated on 30/Apr/21 $${A}\:{rectangular}\:{blade}\:{ABCD}\:{is}\:{hanged}\:{up} \\ $$$${on}\:{A}.\:{If}\:{AB}=\mathrm{2}\:{m};\:{AD}=\mathrm{3}{m}\:,\:{the} \\ $$$${angle}\:{between}\:\left({AD}\right)\:{and}\:{the}\: \\ $$$${verticale}\:{when}\:{the}\:{system}\:{is}\: \\ $$$${equilibred}\:{is}: \\ $$$$\left.{a}\right)\mathrm{56}.\mathrm{3}\:° \\ $$$$\left.{b}\right){Arcsin}\frac{\mathrm{2}}{\mathrm{3}} \\ $$$$\left.{c}\right)\mathrm{41}.\mathrm{8}° \\…

Today-is-the-birthday-of-Matongue-His-age-is-the-double-of-his-daughter-s-age-Will-this-event-happen-in-the-futur-a-Yes-Each-two-years-b-Yes-In-two-years-c-No-d-Any-correct-answer-

Question Number 139742 by mathocean1 last updated on 30/Apr/21 $${Today}\:{is}\:{the}\:{birthday}\:{of}\:{Matongue}. \\ $$$${His}\:{age}\:{is}\:{the}\:{double}\:{of}\:{his}\:{daughter}'{s} \\ $$$${age}.\:{Will}\:{this}\:{event}\:{happen}\:{in}\:{the} \\ $$$${futur}? \\ $$$${a}.{Yes}\:{Each}\:{two}\:{years} \\ $$$${b}.\:{Yes}\:{In}\:{two}\:{years}. \\ $$$${c}.\:{No} \\ $$$${d}.\:{Any}\:{correct}\:{answer}. \\…

Find-the-value-of-X-such-that-1-5-9-13-17-2021-X-mod1000-

Question Number 139737 by mathsuji last updated on 30/Apr/21 $${Find}\:{the}\:{value}\:{of}\:{X}\:{such}\:{that}: \\ $$$$\mathrm{1}\centerdot\mathrm{5}\centerdot\mathrm{9}\centerdot\mathrm{13}\centerdot\mathrm{17}\centerdot…\centerdot\mathrm{2021}\equiv{X}\left({mod}\mathrm{1000}\right) \\ $$ Answered by mindispower last updated on 01/May/21 $${A}=\underset{{k}=\mathrm{0}} {\overset{\mathrm{505}} {\prod}}\left(\mathrm{1}+\mathrm{4}{k}\right)\equiv{X}\left[\mathrm{1000}\right] \\…

Question-8667

Question Number 8667 by tawakalitu last updated on 20/Oct/16 Answered by sandy_suhendra last updated on 20/Oct/16 $$\mathrm{at}\:\mathrm{t}=\mathrm{5}\:\mathrm{sec}\:\mathrm{the}\:\mathrm{body}\:\mathrm{reaches}\:\mathrm{the}\:\mathrm{ground}\:\Rightarrow\:\mathrm{y}=\mathrm{0} \\ $$$$\mathrm{y}=\mathrm{V}_{\mathrm{o}} .\mathrm{t}\:−\:\frac{\mathrm{1}}{\mathrm{2}}\mathrm{g}.\mathrm{t}^{\mathrm{2}} \\ $$$$\mathrm{0}=\mathrm{V}_{\mathrm{o}} .\mathrm{5}\:−\:\frac{\mathrm{1}}{\mathrm{2}}.\mathrm{10}.\mathrm{5}^{\mathrm{2}} \\ $$$$\mathrm{5V}_{\mathrm{o}}…