Write five family names on a piece of paper. Swap papers. Find out how your partner is related to each person. > Who's Peter? He's my grandfather He died before I was born.

если даны точки

[tex]\text{a}(x_1; \text{b}(x_2; y_2)[/tex]

то расстояние между ними можно посчитать по формуле:

[tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]\text{a}(2; - \text{b}(5; {(5-2)^2+(3-(-}=\sqrt{3^2+4^2}=\sqrt{9+16}=\sqrt{25}=\boxed{5}[/tex]

1700+(1700: 2)+х=5000

1700+852+х=5000

2550+х=5000

х=5000-2550

х=2450

ответ: 2450 деталей изготовили в третий день