An electron has an atomic mass of 5.4 x 10-4. if a carbon atom has 6 electrons, what is the combined atomic mass of the electrons in a single carbon atom? answer in scientific notation.

a) 3.24 x 10-3
b) 3.24 x 10-4
c) 3.24 x 10-5
d) 32.4 x 10-4

If 1/2+2/5s=s-3/4,what is the value of s? a. s=3/4 b. s=25/12 c. s=-25/12 d. s=-3/4

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 measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?