Пошаговое объяснение:
16.
17.
18.
= 72 km/ч
t1 = 144/72 = 2 ч
t2 = 36/72 = 0.5 ч
19.
S = 80 km
t1 = 8/7 ч
t2 = 100 min = 1,4 ч
U1 = 80•7/8 = 70 km
U2 = 80/1.4 = 800/14 ≈ 57.14 km
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Пошаговое объяснение:
16.
17.
18.
= 72 km/ч
t1 = 144/72 = 2 ч
t2 = 36/72 = 0.5 ч
19.
S = 80 km
t1 = 8/7 ч
t2 = 100 min = 1,4 ч
U1 = 80•7/8 = 70 km
U2 = 80/1.4 = 800/14 ≈ 57.14 km