For a certain city, the high temperature (in degrees Celsius) are plotted against the number of days after the new year. Based on this information is the high temperature in this city a linear function of the number of days after the new year?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?