Answer:
37 yw
Step-by-step explanation:
By Pythagoras Theorem,
Length= (20^2 - 15^2)^0.5= (175)^0.5=5√7
Add similar terms:
(2x + 3x - 10x) + (5x² + x<span>²) </span>= -5x + 6x<span>² (ANSWER: C)</span>
Answer:
y=-2
Step-by-step explanation:
2x-y=12
-
x+3y=-1
2)
2x-y=12
-
2x+6y=-2
3)
-7y=14
y=-2