The distance from the center of a circle and a chord is 15 cm. If the radius of the circle is 20 cm, what is the length of the chord?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

The total number of dental clinics total for the last 12 months was recorded

What is the measure of angle x? answer