11.4 решите б в г, пожалуйста. Created by superkukolka1. algebra-ru

Б) а₁=2,3 а₂=3,2 d-? d=a₂-a₁=3.2 - 2.3=0.9Ответ: 0,9в) а₁₀=13 а₅=18 d-?{a₁₀=a₁+9d {13=a₁+9d {a₁=13-9d{a₅=a1+4d {18=a₁+4d {a₁=18-4d13-9d=18-4d13-18=-4d+9d-5=5dd=-1Ответ: -1г){а₁+а₂+а₃=42 {а₁=6а₃a₂=a1+d a₃=a₁+2d {a₁+a₁+d+a₁+2d=42 {3a₁+3d=42 {a₁+d=14 {a₁=14-d {a₁=6(a₁+2d) {a₁=6a₁+12d {-5a₁=12d {-5a₁=12d-5(14-d)=12d-70+5d=12d-70=7dd=-10Ответ: -10Новые вопросы в АлгебраТочки A, B і C належать одній прямій, AB = 8 см, відрізок AC на 2 см довший за відрізок BC. Знайдіть відрізок ACНа тридцяти картках виписані натуральні числа від 1 до 30. Навмання вилучається одна з них. Ймовірність вилучення такої картки, щоб число ділилося на…2 або на 6 дорівнюєПомогите с решением заданияПомогите решить заданиеПомогите пожалуйста с решениемДопоможіть вирішити завданняпомогите пожалуйста. Знайдіть похідну функції у =5x² +2.Скільки шестицифрових чисел, що не містять однакових цифр, можна скласти за допомогою цифр 2,3,4,5,6,7 так, щоб число закінчувалось цифрою 3. Преобразуйте в произведение 1-√2cosAнайдите остаток от деления суммы 7³ + 11 x 7 на 6ПредыдущийСледующийВместе мы знаем большеЭтот сайт использует cookies Политика Cookies . 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\u043a\u0430\u0440\u0442\u043a\u0438, \u0449\u043e\u0431 \u0447\u0438\u0441\u043b\u043e \u0434\u0456\u043b\u0438\u043b\u043e\u0441\u044f \u043d\u0430 2 \u0430\u0431\u043e \u043d\u0430 6 \u0434\u043e\u0440\u0456\u0432\u043d\u044e\u0454"},{"id":49782558,"content":"\u041f\u043e\u043c\u043e\u0433\u0438\u0442\u0435 \u0441 \u0440\u0435\u0448\u0435\u043d\u0438\u0435\u043c \u0437\u0430\u0434\u0430\u043d\u0438\u044f"},{"id":49782557,"content":"\u041f\u043e\u043c\u043e\u0433\u0438\u0442\u0435 \u0440\u0435\u0448\u0438\u0442\u044c \u0437\u0430\u0434\u0430\u043d\u0438\u0435"},{"id":49782530,"content":"\u041f\u043e\u043c\u043e\u0433\u0438\u0442\u0435 \u043f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430 \u0441 \u0440\u0435\u0448\u0435\u043d\u0438\u0435\u043c"},{"id":49782513,"content":"\u0414\u043e\u043f\u043e\u043c\u043e\u0436\u0456\u0442\u044c \u0432\u0438\u0440\u0456\u0448\u0438\u0442\u0438 \u0437\u0430\u0432\u0434\u0430\u043d\u043d\u044f"},{"id":49782512,"content":"\u043f\u043e\u043c\u043e\u0433\u0438\u0442\u0435 \u043f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430. \u0417\u043d\u0430\u0439\u0434\u0456\u0442\u044c \u043f\u043e\u0445\u0456\u0434\u043d\u0443 \u0444\u0443\u043d\u043a\u0446\u0456\u0457 \u0443 =5x\u00b2 +2.\u200b"},{"id":49782395,"content":"\u0421\u043a\u0456\u043b\u044c\u043a\u0438 \u0448\u0435\u0441\u0442\u0438\u0446\u0438\u0444\u0440\u043e\u0432\u0438\u0445 \u0447\u0438\u0441\u0435\u043b, \u0449\u043e \u043d\u0435 \u043c\u0456\u0441\u0442\u044f\u0442\u044c \u043e\u0434\u043d\u0430\u043a\u043e\u0432\u0438\u0445 \u0446\u0438\u0444\u0440, \u043c\u043e\u0436\u043d\u0430 \u0441\u043a\u043b\u0430\u0441\u0442\u0438 \u0437\u0430 \u0434\u043e\u043f\u043e\u043c\u043e\u0433\u043e\u044e \u0446\u0438\u0444\u0440 2,3,4,5,6,7 \u0442\u0430\u043a, \u0449\u043e\u0431 \u0447\u0438\u0441\u043b\u043e \u0437\u0430\u043a\u0456\u043d\u0447\u0443\u0432\u0430\u043b\u043e\u0441\u044c \u0446\u0438\u0444\u0440\u043e\u044e 3."},{"id":49782347,"content":"\u041f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0439\u0442\u0435 \u0432 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d\u0438\u0435 1-\u221a2cosA"},{"id":49782223,"content":"\u043d\u0430\u0439\u0434\u0438\u0442\u0435 \u043e\u0441\u0442\u0430\u0442\u043e\u043a \u043e\u0442 \u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0441\u0443\u043c\u043c\u044b 7\u00b3 + 11 x 7 \u043d\u0430 6\u200b"}] window.jsData.nearestQuestions = { next: { url: '/task/9335504', id: '9335504' }, prev: { url: '/task/9335501', id: '9335501' } } window.jsData.pubmaticAllowedForIp = true window.jsData.userLocationInfo = 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11.4 решите б в г, пожалуйста...

superkukolka1 @superkukolka1

July 2022 1 19 Report

11.4
решите б в г, пожалуйста

Answers & Comments

m11m Б) а₁=2,3 а₂=3,2 d-?
d=a₂-a₁=3.2 - 2.3=0.9
Ответ: 0,9
в) а₁₀=13 а₅=18 d-?
{a₁₀=a₁+9d {13=a₁+9d {a₁=13-9d
{a₅=a1+4d {18=a₁+4d {a₁=18-4d
13-9d=18-4d
13-18=-4d+9d
-5=5d
d=-1
Ответ: -1
г){а₁+а₂+а₃=42
{а₁=6а₃
a₂=a1+d a₃=a₁+2d
{a₁+a₁+d+a₁+2d=42 {3a₁+3d=42 {a₁+d=14 {a₁=14-d
{a₁=6(a₁+2d) {a₁=6a₁+12d {-5a₁=12d {-5a₁=12d
-5(14-d)=12d
-70+5d=12d
-70=7d
d=-10
Ответ: -10