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February 1, 2015

February 1, 2015

Posted by **Delores** on Friday, August 20, 2010 at 8:58pm.

Solve: 0.9x+9<_1.7x-8

- math -
**bobpursley**, Friday, August 20, 2010 at 9:26pmsubtract 9

.9x<=1.7x-17

divide by .9

x<= 1.7x/9-17/9

subtract 1.7x/9 from each side

x(1-1.7/9)<=-17/9

x(1-.19)<=-17/9

divide both sides by .81 and you have it.

check my thinking.

- math -
**Henry**, Saturday, August 21, 2010 at 4:50pm0.9X + 9 <= 1.7X - 8.

0.9X - 1.7X <= -8 -9,

-0.8X <= -17,

Divide both sides by -0.8 and reverse

inequality sign:

X >= 21.25.

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