On a cold day, the temperature in a certain city changed - 23.8°F over 6.8 hours.
What was the average change in temperature per hour?
Enter your answer as a decimal in the box.
F

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.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Which strategy is used by public health to reduce the incidence of food poisoning?