2x+y=6
3x+5y=9
y = 6 - 2x
3x + 5( 6-2x ) = 9
3x + 30 - 10z = 9
7x = 21
x = 3
y = 6 - 2(3)
y = 0
Answer:
cos and sec
Step-by-step explanation:
The ray is in the third quadrant.
Sine is neg, csc is neg, tan is pos and cot is pos. All those are incorrect
Cos and sec are neg which is correct.
the airplane new altitude is 17500
20000-2500=17500
