Math
posted by Anonymous .
Determine whether the statement is true, false, or sometimes true. Explain or show why.
If x is positive and y = x, then xy is negative.
Is this always true or sometimes true?

Math 
LALA
False. 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
If y = x, the xy = x(x).
What do you get when you multiply a positive by a negative?
Respond to this Question
Similar Questions

math
Determine whether the statement is true, false, or sometimes true. Provide an example to justify your answer. If both x and y are integers and x > y, then x^2 > y^2. 
basic math
Is it always true, sometimes true, or never true that a regular quadrilateral has two or more obtuse exterior angles? 
mathematics
Determine whether the statement is true, false, or sometimes true. 1) If x and y are both integers, 1) then (x)3 = x3 A) Sometimes true B) True C) False 
math
Determine whether the statement is always true, sometimes true, or never true. 3) The length of the hypotenuse of a right triangle equals the length of one of the legs of the triangle. Answer choice: a.) always true b.) sometimes true … 
geometry
Is it always true, sometimes true, or never true that the centroid is outside its associated triangle? 
Math
a.)If ABCD is a parallelogram, then ABCD is (always true, sometimes true, OR never true) a rectangle. b.)The diagonals of a square (always true, sometimes true, OR never true) bisect each other. c.)If WXYZ is a rectangle, then the … 
Calculus theory
Determine if the statement is always true, sometimes true, or never true. If y is a function of x, and is also a function of t. then dy/dx = dy/dt explain. i think its sometimes true but i don't know why it is. am i right? 
Algebra
A positive integer minus a positive integer is always positive. This statement is sometimes true. For example, 17 – 5 = 12, but 15 – 20 = –5. post five other statements about the addition and subtraction of positive and negative … 
Math
Decide whether each statement is always true, sometimes true, or never true. 
Math
Decide whether the given statement is always, sometimes, or never true. The domain of a rational expression and any simplified form are equivalent. a. sometimes true b. never true c. always true