Monday

March 30, 2015

March 30, 2015

Posted by **Anonymous** on Saturday, October 24, 2009 at 1:59pm.

If x is positive and y = -x, then xy is negative.

Is this always true or sometimes true?

- Math -
**LALA**, Saturday, October 24, 2009 at 3:20pmFalse. If x is positive and you put a negative in front of it, you have to divide by negative one which would then give you positive x again. If you multiply a positive x and a positive y then xy is positive. False. Hope that helps.!!!:)

- Math -
**PsyDAG**, Sunday, October 25, 2009 at 11:51amIf y = -x, the xy = x(-x).

What do you get when you multiply a positive by a negative?

**Answer this Question**

**Related Questions**

Algebra - A positive integer minus a positive integer is always positive. This ...

math - Determine whether the statement is always true, sometimes true, or never ...

mathematics - Determine whether the statement is true, false, or sometimes true...

Math - a.)If ABCD is a parallelogram, then ABCD is (always true, sometimes true...

Calculus theory - Determine if the statement is always true, sometimes true, or ...

geometry - Is it always true, sometimes true, or never true that the centroid is...

Math - Decide whether each statement is always true, sometimes true, or never ...

basic math - Is it always true, sometimes true, or never true that a regular ...

math - Determine whether the statement is true, false, or sometimes true. ...

calculus - Determine whether the statement is true or false. If it is true, ...