What are two different ways of factoring -3x - 9? Select all that apply ​

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Use sigma notation to represent the following series for 9 terms.