Posted by **Bubba** on Monday, August 23, 2010 at 6:18pm.

2x + 3y is less than or equal to 6

solve b=6c for c

The length of a rectangle is fixed at 15cm. What widths will make the perimeter greater than 80 cm?

solve the compound inequality:

6>-5x + 5 or 10 is less than or equal to -5x+4

- algebra -
**Henry**, Monday, August 23, 2010 at 10:37pm
1. 2x + 3y <= 6. Solve for ?

3y<= -2x + 6,

y = -2x/3 + 2.

2. b = 6c.

c = b/6.

3. Given: L = 15 cm.

2L + 2W > 80,

30 + 2W > 80,

2W > 80 - 30,

2W > 50,

W > 25 cm

4. I'm assuming both binomials =

-5x + 5.

6 > - 5x + 5 >= 10,

Subtract 5:

6 - 5 > -x >= 10 - 5,

1 > - 5x >= 5,

Multiply all terms by -5 and reverse

inequality sign:

1/-5 < x <= 5/-5,

-1/5 < x <= -1.

- algebra -
**Henry**, Wednesday, August 25, 2010 at 12:05pm
1. Ans: y <= -2x/3 + 2.

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