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Иленьк
Иленьк
26.06.2022 10:26 •  Математика

Помагите Сумма трёх последовательных чисел (натуральных) равна разности чисел 119,3/5и 17, 3/2.Найдите второе из этих натуральных чисел.

А)32. В) 30. С)33. Д)35. Е)34

👇
Ответ:

Е)34

Пошаговое объяснение

4,4(88 оценок)
Ответ:
lckzgizigzly
lckzgizigzly
26.06.2022

ответ: 34

Возьмём числа за х, х+1, х+1+1 и приравняем к разности чисел.

х + х +1 + х +1 +1 = 119-3/5 - 173/2

3х = 119 3/5 - 17 3/2 - 3

Останется только решить.

Целого числа не получится, х будет равен 33.3. Можно округлить до 33 - это первое число

4,4(36 оценок)
Открыть все ответы
Ответ:
DeniSNok
DeniSNok
26.06.2022

Задание 1.

Площадь прямоугольника равна произведению двух его сторон  

1) 2,376 * 0,42 (72 -42,65) * 0,08=2.34

2) (72 -42,65)=29.35

3) 2,376 * 0,42=0.99792

4) 0.99792*29.35=29.288952

5) 29.288952*0.08=2.34311616  

6) Округляем = 2.34

Задание 2.

1) 15,8 * 20,5 = 323,9 (руб.) - получил за вишни.

2) 22,6 * 13,3 = 300,58 (руб.) - за сливы.

3) 323,9 - 300,58 = 23,32 (руб.) -получил больше за вишни.  

Задание 3.

длина- 4,5*2=9 см

высота- 4,5-0,9=2,6 см

площадь-2(ab+bc+ac) S=2(9*4,5 + 9*3,6 + 4,5*3,6) S=178,2(cм2)

объем-V=abc V=9*4,5*3,6 V=145,8(см3)

                                                                         

4,4(60 оценок)
Ответ:
AlyonaYarmak
AlyonaYarmak
26.06.2022

30уч-100%

?уч  - 20%

30*0,2=6(уч)-  на 6 учнів збільшилась кількість учасників гуртка 

30+6=36(уч)-кількість учасників гуртка

    

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

4,4(16 оценок)
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