Answer:
All triangles have 180 degrees.
Step-by-step explanation:
A + b = 45
a - b = 21
a = 21 + b
Use substitution
21 + b + b = 45
2b = 24
b = 12
45 - 12 = 33
The numbers are 33 and 12
Negative, because Correlation and slope have the same direction (Sxy will be negative)