2007-01-15 10:13:14 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
.7
2007-01-15 10:13:34 · answer #1 · answered by STAN 3 · 0⤊ 0⤋
substite .3 for x and 1 for z into x+ y=z
.3 +y = 1
-.3 from both sides
y = .7
2007-01-15 18:18:00 · answer #2 · answered by dla68 4 · 1⤊ 0⤋
First: since the problem gives you the number for variables "x" and "z" >
Replace 1 with "z" and .3 with "x" >
.3 + y = 1
Sec: solve for "y" by isolating it on one side > subtract .3 from both sides...
.3 - .3 + y = 1 - .3
y = .7
2007-01-15 18:18:05 · answer #3 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
substitue z=1 and x=.3 in the first equation
.3+y=1
y=.7
2007-01-15 18:17:32 · answer #4 · answered by Amanda 5 · 1⤊ 0⤋
.3+y=1, you just subtract .3 from both sides of the equation and your answer is .7
2007-01-15 18:18:33 · answer #5 · answered by hjfr27 3 · 0⤊ 0⤋
x+y=z
.3+y=1
y=.7
2007-01-15 18:24:39 · answer #6 · answered by music_gurl62091 2 · 0⤊ 0⤋
.3 + y = 1
1-.3 =y
y=.7
2007-01-15 18:18:07 · answer #7 · answered by Matt C 1 · 0⤊ 0⤋
Just substitute.
x + y = z,
so
0.3 + y = 1
isolate the variable by subtracting 0.3 from both sides -
0.3 - (0.3) + y = 1 - (0.3)
so,
0 + y = 0.7
y = 0.7
2007-01-15 18:19:35 · answer #8 · answered by Anonymous · 0⤊ 0⤋
.7 answering this easy q for points
2007-01-15 18:21:54 · answer #9 · answered by George G 5 · 0⤊ 0⤋
.7
2007-01-15 18:16:55 · answer #10 · answered by tennisfreak 1 · 0⤊ 1⤋