Answer:
49 and 26
Step-by-step explanation:
every triangles angles equal 180 degrees 76 + 55 equals 131. 180 - 131 = 49. the 2nd question has a small square at the bottom part of the triangles and those always mean 90 degrees. 64 + 90 = 154. 180 - 154 = 26.
r=-3, 3,0
factor -
3r(r-3) (r+3) ,
solution-
3r=0 , r=0
3r^2-9r =0
3r^2=9r
r=3,
r+3=0
r= -3
48/73
cosine = adjacent/hypotenuse
= 48/73
the first on is 144 the secnd one is 1
i think that's write.
