Answer:
D. 8x=16
Step-by-step explanation:
If y=2x, then
2x+3y=16
2x+3(2x) =16
2x +6x=16
8x=16
4x +50=90
X=(90-50):4
X=10
C
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mation ab
Acute angle.
Right angle.
Obtuse angle.
Straight angle.
Reflex angle