Answer:
x = 8, y = -5
Step-by-step explanation:
Multiplying the 2nd equation by 3, we get -3x-9y = 21. Then eliminating with the first equation we get -5y = 25. y = -5. Substituting this into the original equation, we get x = 8.
Answer:
+28
Step-by-step explanation:
She started at 8 meters above sea level +8
She went up 20 meters +20
+8+20 = +28
She is 28 meters above sea level +28
Answer:
45
Step-by-step explanation:
The 45° complement is the angle that constitutes a right angle (90°) when added to 45 .°.
90 - 45 = 45
