In Chicago, the high temperatures in degrees Fahrenheit for five days in January were -1, 8, 6, -15. What was the average temperature for these five days Answer this for the points pleas eadi will give more

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Is the figure congruent? yes or no?