Помогите пожалуйста все решить . Задание в фото. Created by vika06071999. algebra-ru

1.х-5(х-4)≥9х-(5-2х)х-5х+20≥9х-5+2х-4х-11х≥-5-20-15х≥-25х≤25/15х≤50/301,87 : 1,1 + 1/3 = 1,7 + 1/3= 17/10 + 1/3 = (17*3+10)/30=61/30=2 ¹/₃₀2,9+0,4*(-3 ¹/3)=2,9+0,4*(-10/3)=2,9 - (4/10)*(10/3)=29 - 4 = 29*3-4*10 = 10 3 30=87-40 =47 = 1 ¹⁷/₃₀ 30 30Ответ: 1 ¹⁷/₃₀2) {6x-3(x-1)≥2+5x {5(x-1)+8≥1-3(x+2)6x-3(x-1)≥2+5x6x-3x+3≥2+5x-2x≥-1x≤0.55(x-1)+8≥1-3(x+2)5x-5+8≥1-3x-68x≥-8x≥-1{x≤0.5{x≥-1\\\\\\\\\\\\\\\\\\\\\\\\\\\---------- -1 ------------ 0.5 ---------- \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\-1≤x≤0.5x∈[-1; 0,5] Реклама Реклама Новые вопросы в Алгебра 4с^2-81/4c^2умножить 36с + 81 при с=2,5 9(a-5)/a^2-25 при a= - 4,5 Cпасайте 9 (a-5)/a^2-25 при a= - 4,5 Я СОННЫЙ ЗЛОЙ УСТАВШИЙ СПАСИТЕ помогите пожалуйста заранее спасибо! У клітинки дошки 8*8 можна ставити зірочку (не більше 1 зірочки у клитинку ) таким чином щоб у кожному рядку кожному стовпчику та кожній діагоналі бул … о не більше 4 зірочок . яку максимальну кількість зірочок можна поставити 12a^3b^2+6a^2/18a^4 спасите папппппп помогите пожалуйстаааа Визначте, чи є рівносильними нерівності/определите, есть ли равносильными неровности 1) -4а<0 і а<0 2) 0*х>5 і 0*х<-6 3) 0*х>-5 і 0*х&l … t;8 Пожалуйста, даю 50 баллов очень надо!!!!!!!! помогите!!!! пожалуйста!! с подробным решением и объяснением!! Поезд длиной 240 метров прошел мост за 2 минуты. Какова скорость поезда, если длина моста 360 метров. Предыдущий Следующий Реклама - это не так уж плохо Реклама - это не так уж плохо Понимаем - вы пришли сюда не за рекламой. Но она помогает нам предоставлять бесплатный доступ к Знаниям. Пожалуйста, внесите наш сайт в список разрешенных. ОК, разблокирую рекламу на Знаниях! Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . 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Помогите пожалуйста все решить . Задание в фото...

vika06071999 @vika06071999

October 2021 1 39 Report

Помогите пожалуйста все решить . Задание в фото

Answers & Comments

m11m 1.
х-5(х-4)≥9х-(5-2х)
х-5х+20≥9х-5+2х
-4х-11х≥-5-20
-15х≥-25
х≤25/15
х≤50/30

1,87 : 1,1 + 1/3 = 1,7 + 1/3= 17/10 + 1/3 = (17*3+10)/30=61/30=2 ¹/₃₀

2,9+0,4*(-3 ¹/3)=2,9+0,4*(-10/3)=2,9 - (4/10)*(10/3)=29 - 4 = 29*3-4*10 =
10 3 30
=87-40 =47 = 1 ¹⁷/₃₀
30 30
Ответ: 1 ¹⁷/₃₀

2) {6x-3(x-1)≥2+5x
{5(x-1)+8≥1-3(x+2)

6x-3(x-1)≥2+5x
6x-3x+3≥2+5x
-2x≥-1
x≤0.5

5(x-1)+8≥1-3(x+2)
5x-5+8≥1-3x-6
8x≥-8
x≥-1

{x≤0.5
{x≥-1
\\\\\\\\\\\\\\\\\\\\\\\\\\\
---------- -1 ------------ 0.5 ----------
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
-1≤x≤0.5
x∈[-1; 0,5]