Which step is included in the construction of perpendicular lines using a point on the line? (3 points) a
Make arcs above and below the given line with a compass.

b
Create two arcs above the given line with a straightedge.

c
Connect two created arcs together with a compass.

d
Measure the constructed angles with a straightedge.

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.

Which expression is equivalent to the expression shown?

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b