Find the standard matrix of the linear transformation T. T: R^2->R^2 rotates points (about the origin) through 7/4pi radians (with counterclockwise) rotation for a positive angle.

Explain how to graph a scatterplot and its regression line using a regression calculator.

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.

Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )