Is the answer to -8.8-3.4 positive or negative? i know. it is 12.2 but i don't know if it's -12.2 or +12.2

15 points ! ~ see if you know the answer to both you!

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

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext