Divergence theorem, help pls

X+ y = 5 ; x - y =3 solve using linear combination

Corresponding angles are a. always b. sometimes c. never congruent

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.