What is
2x - 1 = 3/4x + 9

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?