Question

Помогите пж Срочно!!!!
1-вариант!!!

fe7ba60f6a500e37a0ed3c4076ab2434.docx

Answer 1

Ответ:

4.

t1 = 30/v (ч), t2 = 17/v+2 (ч)

t = t1 + t2 = 30/v + 17/v+2

При V = 15,значит t = 30/15 + 17/15+2 = 2 + 1 = 3 (ч)

3.

3^9/4×8/3^3

3^2×2

9×2=18