Y = x - 7
2x + y = 8
2x + (x - 7) = 8
2x + x - 7 = 8
3x - 7 = 8
<u> + 7 + 7</u>
<u>3x</u> = <u>15</u>
3 3
x = 5
y = x - 7
y = 5 - 7
y = -2
(x, y) = (5, -2)
Answer:
.6
Step-by-step explanation:
105 or D divided by 175 meters per second or T equals .6
105÷175=.6
Hello,
y-3x=2==>x=(y-2)/3
==>(x+1)²=((y-2)/3+1)²=(y+1)²/9
y=(x+1)²-5
==>y=(y²+2y1)/9 -5
==>y²-7y-44=0 ; Δ=7²+4*44=225=15²
==>y=(7+15)/2 or y=(7-15)/2
==>y =11 and x=(11-2)/3=3
or y=-4 and x=(-4-2)/3=-2
sol={(3,11);(-2,-4)}
Answer:
16.8
Step-by-step explanation:
Www.khanacademy.org that website should he
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