Предмет: Алгебра, автор: naomilane

Помогите пожалуйста, дам за это задание 10 баллов!

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Ответы

Автор ответа: lisichkinilya2911

0

Ответ:

1.24км 2.12 минут

Объяснение:

по графику видно, что за одну минуту проходит 1.5 км, и с этого берем что за 16 минут он проедет 24 км(16*1.5), также во втором 18 км проедет за 12 минут(18 км:1.5)

Автор ответа: MatemaT123

0

Ответ:

$24 km, \quad 12min;$

Объяснение:

Из графика видно, что:

1) за 4 минуты (две клеточки по шкале "время") преодолено 6 километров пути (три клеточки по шкале "путь"),

2) за 8 минут (четыре клеточки по шкале "время") преодолено 12 километров пути (шесть клеточек по шкале "путь").

$\frac{4}{6}=\frac{8}{12}=\frac{2}{3};$

Из этого соотношения получаем, что каждые 2 минуты преодолевается 3 км пути. Составим пропорции для решения задачи:

$a) \quad \frac{2}{3}=\frac{16}{x} \Rightarrow x=\frac{16 \cdot 3}{2}=8 \cdot 3=24(km);$

$b) \quad \frac{2}{3}=\frac{x}{18} \Rightarrow x=\frac{18 \cdot 2}{3}=6 \cdot 2=12(min);$

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