Решить . ( десятичные дроби ) а) надо огородить сад, ширина которого равна 260, 5 метров больше ширины. сколько потребуется для этого кольев, если на каждый метр ограды требуется 2 кола?

260,6+120,5 = 381,1м - длина

(260,5+381,1)*2=1283,2м - периметр участка

1283,2/1*2=2566,4 шт

ответ. потребуется 2566 шт кольев.

(0,5 : 1,25 + 7/5 : 1 4/7 - 3/11) * 3 / (1,5 + 1/4) : 18 1/3 = 32

Числитель: (0,5 : 1,25 + 7/5 : 1 4/7 - 3/11) * 3 = 3 3/55

1) 0,5 : 1,25 = 0,4

2) 7/5 : 1 4/7 = 7/5 : 11/7 = 7/5 * 7/11 = 49/55

3) 0,4 + 49/55 = 4/10 + 49/55 = 44/110 + 98/110 = 142/110 = 71/55 = 1 16/55

4) 1 16/55 - 3/11 = 1 16/55 - 15/55 = 1 1/55

5) 1 1/55 * 3 = 56/55 * 3 = 168/55 = 3 3/55  

Знаменатель: (1,5 + 1/4) : 18 1/3 = 21/220

1) 1,5 + 1/4 = 1 5/10 + 1/4 = 1 10/20 + 5/20 = 1 15/20 = 1 3/4

2) 1 3/4 : 18 1/3 = 7/4 : 55/3 = 7/4 * 3/55 = 21/220

Числитель/Знаменатель: 3 3/55 : 21/220 = 168/55 * 220/21 = 8 * 4 = 32

Пошаговое объяснение:

Three workers, Murat, Askar and Arman, were hired to renovate the office space. Murat will complete the renovation in two days. Askar will do it in three days, and Armand in six days. Answer the following questions:

Question 1: How many days will it take for workers to complete the repair work together?

Question 2: If Murat first does 1/3 of the work, then Askar does the rest, and Armand does the rest, how many days will the work be completed?

Question 3: Who carries out repairs quickly: when does Murat work alone? or when Askar and Arman work together? Question 4: If Murat, Askar and Arman do the work together and receive 45,000 tenge, how much will each of them receive?

Question 5: On the first day Murat worked alone, and from the second day he worked

Пошаговое объяснение:

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