Question

СРОЧНООООО!!!!!!!!
1. Запиши коефіцієнт буквеного виразу:
1) 9x; 2) –3y; 3) ; 4) –0,5xy; 5) ab; 6) –c.

2. Виконай множення зручним способом:
1) –0,2 ⋅ 31 ⋅ (–5); 2) –2 ⋅ (–0,5) ⋅ 117;
3) 0,25 ⋅ (–19) ⋅ (–40); 4) –0,125 ⋅ (–7,2) ⋅ (–80);
5) –20 ⋅ (–17,2) ⋅ (–5); 6) –500 ⋅ 12 ⋅ 0,03 ⋅ (–2).

Answer 1

Пошаговое объяснение:

№1

9х

Коэффициент = 9

-3у

Коэффициент = -3

-0,5ху

Коэффициент = -0,5

ав

Коэффициент = 1

-с

Коэффициент = -1

№2

-0,2 * 31 * (-5) = (-0,2 * (-5)) * 31 = 1 * 31 = 31

-2 * (-0,5) * 117 = (-2 * (-0,5)) * 117 = 1 * 117 = 117

0,25 * (-19) * (-40) = (0,25 * (-40)) * (-19) = -10 * (-19) = 190

-0,125 * (-7,2) * (-80) = (-0,125 * (-80)) * (-7,2) = 10 * (-7,2) = -72

-20 * (-17,2) * (-5) = (-20 * (-5)) * (-17,2) = 100 * (-17,2) = -1720