gwbdee918
09.08.2021 •
Mathematics
Cho tam giác ABC. Trên tia đói của tia AB ta lấy điểm E sao cho AE=1/2 AB và trên tia đối của tia AC ta lấy điểm D sao cho AD=1/2AC.
a/ Chứng minh ED//BC
b/ Chứng minh DE=1/2 BC
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Ответ:
1925 km
Step-by-step explanation:
Travel time in hours:minutes is ... 19:30 -16:00 = 3:30, so 3.5 hours.
The distance is given by ...
distance = speed × time
= (550 km/h)(3.5 h) = 1925 km
The distance from A to B is 1925 km.