Answer:
-7/2 degrees per hour
Step-by-step explanation:
Divide the total change (-12 1/4 degrees) by the total time elapsed (3 1/2 hrs):
-49/4 degrees -49(2)
------------------------ = ------------- = -7/2 degrees per hour
7/2 hrs 4(7)
3751×2=7502
15002÷2=7502
250+7252=7502
7502+0=7502
-3x + 2y = -3
4x - y = -1
2(4x - y = -1)
-3x +2y = -3
8x -2y = -2
-5x = -5
/-5
X = 1
X = -6
y = 7
Hope this helped!