How many different 4 person subcommittes can be formed from a club having 12 members

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.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

Say it if the radius of a circle is 6 inches how long is the subtended by an angle measuring 70 degree