In quadrilateral PQRS, ∠P and ∠S are opposite angles.
Answer:
2x +3y=1⇒equation 1
3x=2y+8
3x-2y=8⇒equation 2
by elimination method,
2x+3y=1 ×2
3x-2y=8 ×3
4x+6y=2
9x-6y=24
cut 6y and -6y
4x+6y=2
9x-6y=24
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13x+0=26
13x=26
x=26/13
x=2
substitute x=2 in equation 1
2(2)+3y=1
4+3y=1
3y=1-4
3y=-3
y=-3/3
y=-1
therefore, x=2 and y=-1
hope it helps u!
Price coffee yest = $2.85
today = $2.50
% decreased
= ( 2.85 - 2.50 / 2.85 ) x 100
= ( 0.35 / 2.85 ) x 100
= 12.28 %
≈ 12 %
ans : 12%
I would go with -15 that’s what I came up with
