Which of the following measures of spread are based on the mean?
check all that apply.
a. variance
b. range
c. standard deviation
d. interquartile range

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.