1) 10-7=3 (м/сек) - скорость сближения
2) 30:3=10 (сек)
ответ: собака догонит кошку через 10 сек.
Why do I want to go to America. Let's say, because I really like this country. She is very big and beautiful. There are a lot of cities in it. I want to see New York, Los Angeles and Disneyland. I want to see Niagara Falls. See the statue of liberty. In America they make my favorite phones and Arles watches. I wonder what Hollywood is and how movies are made there. See the Florida cosmodrome and crocodiles. I want to lie on the beaches of Mayami. I want to take a paddle boat trip on the Mississippi River. Visit the White House. To see the president of a great country. !
1)10-7=3м/с-скорость сближения. 2)30:3=через 10 сек. собака догонит кошку.