I have tried this about 7 times and gotten 7 different answers! Can someone show me the steps!?
-1
2007-01-28 07:03:29 · 5 answers · asked by donnam4863 2 in Science & Mathematics ➔ Mathematics
-1
-1
-1 (- 1)
-2
-2 (/-2)
1 >/= y > 1/2 or .5 dividing by negative changes direction of inequality.
2007-01-28 07:12:54 · answer #1 · answered by romeo_1595 2 · 1⤊ 0⤋
-1 <= 1 - 2y < 3 - 3
-2 <= -2y < 0
1 >= y >= 0
2007-01-28 15:07:17 · answer #2 · answered by Puggy 7 · 1⤊ 0⤋
You have to find the values on for y, so you want to get only y in the middle section. Therefore, you subtract 1 from all sides, as you want to get the 1 out from the y section.
-2
You would then need to divide by -2 to get the y by itself, but when you divide by a negative number in an inequality, you have to flip the signs around. Thus:
1 >/= y > 1/2
2007-01-28 15:14:06 · answer #3 · answered by Claire 3 · 0⤊ 0⤋
You can do this by first subtracting 1 from all sides of the equation. Then you would get -2 /=y>1/2
2007-01-28 15:09:30 · answer #4 · answered by mathpinkshoe 1 · 2⤊ 0⤋
-1 ⤠1 - 2y < 3 - 3
-1 ⤠1 - 2y < 0
Splitting it into individual inequalities
-1 ⤠1 - 2y
2y - 1 ⤠1
2y ⤠2
y ⤠1
1 - 2y < 0
1 < 2y
0.5 < y
y ⤠1 AND y > 0.5
So 0.5 < y ⤠1
2007-01-28 15:11:08 · answer #5 · answered by Tom :: Athier than Thou 6 · 1⤊ 0⤋