2007-04-26 11:31:43 · 8 answers · asked by Ashley H 1 in Science & Mathematics ➔ Mathematics
55/y-4 = -35/y
Crossing:
-55y = -35(y-4)
-55y = -35y + 140
-55y + 35y = 140
-20y = 140
y = 140 : -20
y = -7
>::<
2007-04-26 11:41:40 · answer #1 · answered by aeiou 7 · 0⤊ 0⤋
Cross multiply
-55(y) = (y-4)-35
-55y = -35y + 140
-20y = 140
y = -7
2007-04-26 18:37:15 · answer #2 · answered by danjlil_43515 4 · 0⤊ 0⤋
-55/y-4 = -35/y
-55/y + 35/y = 4
(-55+35)/y = 4
(-20)/y = 4
-20 = 4y
-20/4 = y
y= -5
OR
-55/y-4 = -35/y -----> multiply everything by y
-55y/y-4y = -35y/y ------> cancel out
-55 -4y = -35
-55 +35 = 4y
-20 = 4y
-20/4 = y
y = -5
2007-04-26 18:40:52 · answer #3 · answered by Anonymous · 0⤊ 1⤋
y^2-55y = -35y+110
y^2 -20y -110 =0
y = -20+square root of ( 400 + 440i ) / 2
and
y = -20-square root of ( 400 + 440i ) / 2
2007-04-26 18:38:14 · answer #4 · answered by Siddharth A 2 · 0⤊ 1⤋
y-55/y-4=-35/y
y^2-20-4y=0
y^2-4y-20=0
2007-04-26 18:42:11 · answer #5 · answered by Hang 3 · 0⤊ 0⤋
y²-4y-20=0
y=(4+/-sqrt(16+80))/2 = 2 +/- sqrt(24)
2007-04-26 18:34:58 · answer #6 · answered by Anonymous · 0⤊ 1⤋
y-4=-15
y= -11
2007-04-26 18:46:02 · answer #7 · answered by Mister2-15-2 7 · 0⤊ 0⤋
-55/y-4=-35/y=
-35(y-4)=-55y
-35y+140=-55y
-35y+55y+140=-55y+55y
20y+140=0
20y+140-140=0-140
20y=-140
y=-7
-55/-7-4=-35/-7
5=5
2007-04-26 19:32:04 · answer #8 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋