Answer: Twice
Explanation: With quadratic functions they are usually represented by parabolas and they can cross the x axis only once or twice :)
Answer:
Modern humans originated in Africa within the past 200,000 years and evolved from their most likely recent common ancestor, Homo erectus, which means 'upright man' in Latin. Homo erectus is an extinct species of human that lived between 1.9 million and 135,000 years ago.
Explanation:
Differences between Indus, Nile, and Yellow river valley civilizations are (please refer the attached image)
Learn more about the Indus, Nile, and Yellow valley civilizations here:
brainly.com/question/12821276
