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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