помогите срочно надо. Created by cvuс. matematika-ru

1а)б)в)г)2y=4/[ гипербола в 1 и 3чх -4 -2 -1 1 2 4D(y)∈(-∞;0) U (0;4)y>0 x∈(0;∞)31)2/(3-y)²+1/(3-y)(3+y)=(6+2y+3-y)/(3-y)²(3+y)=(y+9)/(3-y)²(3+y)2)(y-3)²*(y+9)/(3-y)²(3+y)=(y+9)/(3+y)3)2y/(y+3)+(y+9)/(3+y)=(3y+9)/(y+3)=3(y+3)/(y+3)=34{1-6/(10-5x)≠0⇒1≠6/(10-5x)⇒10-5x≠6⇒5x≠4⇒x≠0,8{10-5x≠0⇒5x≠10⇒x≠2x∈(-∞;0,8) U (0,8;2) U (2;∞)Новые вопросы в МатематикаПомогите пожалуйста завтра екзамен СРОЧНО ДАЮ 40 БАЛЛОВУ математичному таборі займатися 96 учнів 8-го, 9-го і 10-гокласу. Учні 8 кл склали 0,8 кількості учнів 9-го класу, а 10-го кла…сусклало 33 1/3% сумарного числа 8-го та 9-го класів. Скільки учнівкожного класу займаються у математичному таборі?СРОЧНО ПОМОГИТЕ 500×пи Допоможіть будь ласка, з поясненням 36. Туристы прошли весь маршрут за 3 дня. В первый день они прошли треть пути, а во второй 4/9 всего пути, а в третий оставшиеся 24км. Какова длина вс…его маршрута? СРОЧНО!!У класi число відсутніх учнів складае частину від числа 1/6 присутніх. Коли з класу ви- йшов 1 учень, число відсутніх склало 20% від числа при…сут- ніх. Скільки всього учнів у класi?Длинна 125 м какая ширина и длинна ипериметр площадь 1 haПомогите срочно пожалуйста 5,6Помогите пожалуйста, очень срочно нужно!Помогите 5,6ПожалуйстаПредыдущийСледующийВместе мы знаем большеЭтот сайт использует cookies Политика Cookies . 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July 2022 1 3 Report

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Answers & Comments

sedinalana

Verified answer

1
а) $28b^6/c^3 * c^5/84b^6=c^2/3$
б) $30x^2y*z/72xy=5xz/12$
в) $3(x+2)/(x+3)*(x-3)(x+3)/(x-2)(x+2)=3(x-3)/(x-2)$
г) $(2a-b)/a*(ab+2a-ab)/b(2a-b)=(2a-b)/a*2a/b(2a-b)=2/b$
2
y=4/[ гипербола в 1 и 3ч
х -4 -2 -1 1 2 4
D(y)∈(-∞;0) U (0;4)
y>0
x∈(0;∞)
3
1)2/(3-y)²+1/(3-y)(3+y)=(6+2y+3-y)/(3-y)²(3+y)=(y+9)/(3-y)²(3+y)
2)(y-3)²*(y+9)/(3-y)²(3+y)=(y+9)/(3+y)
3)2y/(y+3)+(y+9)/(3+y)=(3y+9)/(y+3)=3(y+3)/(y+3)=3
4
{1-6/(10-5x)≠0⇒1≠6/(10-5x)⇒10-5x≠6⇒5x≠4⇒x≠0,8
{10-5x≠0⇒5x≠10⇒x≠2
x∈(-∞;0,8) U (0,8;2) U (2;∞)