Kristina conducted a survey and found that 4 out of 5 dentists that she surveyed recommended chewing sugar-free gum. What percentage of
dentists recommended sugar-free gum?
A. 40%
B. 45%
C. 75%
D. 80%

1. are the triangles similar and if so why? what is the value of x? show your work.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?