Which ratio forms a proportion with 14/42 ​

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Which inequality has a dashed boundary line when graphed ?