Question

(c) Emma changed her statement to say that when you multiply two negative decimals and a positive decimal, the product will be positive. Is Emma's new statement always true, sometimes true, or always false? Write two equations to support your answer

Answer 1

The statement is always true.

Let's take -.12*-.5*.2

-.12*-.5*.2=.012

And:
-.2*-.4*.3=.024

A positive multiplied by a positive is, obviously, a positive.

The result of two negative numbers multiplying together is always positive.

So, negative*negative*positive is a positive answer.

Answer 2

True

-1.5 x -0.5 x 0.5 = 0.375

-2.1 x 0.1 x -0.1 = 0.021

Explanation:

the product of two negatives is always positive

so if you have a negative, negative positive its products are like this:

(-)(-)(+) = +

(-)(+)(-) = +

(+)(-)(-) = +

no matter which way they are multiplied its always positive