"write the complex number z=−1−8iz=−1−8i in polar form: z=r(cosθ+isinθ)" find the radius and theta

Landon wrote that 3−2.6=4. which statement about his answer is true?

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.