How many solutions does
-4x + y = 6
-5 x - y = 21 have?
0
1
infinite

Which expression is equivalent to 5r6141 2r+st6

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

00 points ! missy’s rotation maps point k(17, –12) to k’(12, 17). which describes the rotation? 270° counterclockwise rotation 90° counterclockwise rotation 90° clockwise rotation 180° rotation