abstract algebra - Why is negative times negative = positive ...
Thus: $$\rm negative\times positive=negative.$$ If however, the car moves along the $+$ direction but the time the video is played is negative, i.e. the video is played backwards, then you'll see that the car is moving in the $-$ direction, and you'll calculate that it moves "a negative distance". Thus: $$\rm positive\times negative=negative.$$
how can I prove negative times negative is positive.
This proof of the Law of Signs uses well-known laws of positive integers (esp. the distributive law), so if we require that these laws persist in the larger system of positive and negative integers, then the Law of Signs is a logical consequence of these basic laws of positive integers.
Why is negative minus negative not negative? Why is negative …
Feb 2, 2018 · What I understand is that the only difference between plus and minus is direction.. I've never understood this: That +1 + +1 is +2, why is -1 - -1 not -2?
Multiplying positive and negative fractions - Brainly.com
Multiplication of Negative Decimals: The product of negative decimals will be positive (since a negative times a negative equals a positive). For (-0.04)(-0.1), the product is 0.004. Multiplication of Mixed Decimals: The product of a positive and a negative decimal will be negative. For (0.03)(-0.02), the product is -0.0006.
How can a negative multiplied by a negative give positive?
It's best to think, perhaps, of the negative sign as a "change in direction". The default direction is to the positive end of the number line (to the right). So $3\times 2$ moves us six units to the right, to land at $6$. $-3\times 2$ changes direction and moves us $6$ units to …
elementary number theory - negative one times positive one is …
Feb 10, 2016 · This is a question I was surprised that no one on this forum has asked(as far as my search went). I gave a proof that negative times negative = positive. But it relied on the assumption negative times positive = negative. SO now I am asking myself how does one show this fact: negative times positive = negative
Which product is positive? \begin{array}{l} - brainly.com
- Evaluating signs: Negative times Positive equals Negative . - Negative times Negative equals Positive . Since the product has three negative factors (an odd number), the overall product is negative. 3. Product 3: - Evaluating signs: Positive times Positive equals Positive . - Positive times Negative equals Negative . Since there is one ...
Is –3 × 2 positive or negative? - Brainly.com
Apr 19, 2023 · Answer:negative . Step-by-step explanation: Rules . negative times negative equals positive ; Negative times positive equals negative
arithmetic - Formal proof for $(-1) \times (-1) = 1$ - Mathematics ...
To conclude: by wishing to preserve the rules of algebra valid for positive numbers to negative numbers as well, we are led to find that $[(-1)\times (-1)]+[(-1)\times 1]=0$ and thus that $(-1)\times (-1)=-[(-1)\times 1]=-(-(1))=1$. And just for the record, clarity, and sanity: nothing, without exception, in mathematics is just assumed.
What does negative 9 plus negative 1 and negative 9 times …
May 19, 2023 · Negative 9 plus negative 1 equals negative 10, following the rule that two negatives add to a larger negative. Negative 9 times negative 1 equals positive 9, as two negatives multiply to a positive. Explanation: Let's solve the two separate operations individually: Negative addition: − 9 + (− 1) equals negative 10.