Complete these sentences to describe the multiplication of signed numbers. The product of two positive integers is always . The
2 answers:
Answer:
The product of two positive integers is always positive.
The product of two negative integers is always positive.
The product of a positive integer and a negative integer is always negative.
The product of any integer and –1 is always opposite of that number.
Step-by-step explanation:
Rule of multiplication of sign:
First Second Resultant
(+) × (+) = (+)
(-) × (-) = (+)
(+) × (-) = (-)
(-) × (+) = (-)
From the above table we can say that:
The product of two positive integers is always positive.
The product of two negative integers is always positive.
The product of a positive integer and a negative integer is always negative.
Let x be an unknown integer.
The product of an unknown integer and -1 is
Therefore, the product of any integer and –1 is always opposite of that number.
You might be interested in
Complete the square:
And we have:
Answer B.
<h2>Answer:</h2>
The ratio is a fraction that tells us how many times longer a thing is compared to another thing. In mathematics, we express a ratio as the relationship between two numbers, namely , so the ratio can be written as:
If we can change this number without changing the ration we need to multiply both the numerator and the denominator by the same number. For instance, if we have the following ratio:
We can multiply both the numerator and denominator, say, by 7. Then:
As you can see, the ratio's number has changed but without changing the ratio itself because: