Plz answer both questions 15 points PLZ SOMEONE HELP ITS DUE IN A HOUR A: When multiplying or dividing rational numbers, when will the answer be positive? B: When multiplying or…

Question

asked Jan 21, 2020 223k views

1 Answer

DThought · Answer 1 · 2020-01-27T13:32:04+0000

Answer:

If the signs of rational numbers are same, then the answer is positive.

If the signs of rational numbers are different, then the answer is negative.

Explanation:

Consider the provided information.

A: When multiplying or dividing rational numbers, when will the answer be positive?

If we are multiplying or dividing rational numbers the answer will be positive if and only if both the rational numbers have same sign.

For example: Multiply 2 and 4.

2×4=8 (same sign)

or

Multiply -2 and -4.

-2×-4=8 (same sign)

8 is a positive rational number.

Now divided 2 and 4.

(2)/(4) =(1)/(2)

or

Divided -2 and -4.

(-2)/(-4) =(1)/(2)

1/2 is a positive rational number.

Hence, If the signs of rational numbers are same, then the answer is positive.

B: When multiplying or dividing rational numbers, when will the answer be negative?

If we are multiplying or dividing rational numbers the answer will be negative if and only if both the rational numbers have different sign.

For example: Multiply 2 and -4.

2×-4=-8 (different sign)

or

Multiply -2 and 4.

-2×4=-8 (different sign)

-8 is a negative rational number.

Now divided 2 and -4.

(2)/(-4) =-(1)/(2)

or

Divided -2 and 4.

(-2)/(4) =-(1)/(2)

-1/2 is a negative rational number

Hence, If the signs of rational numbers are different, then the answer is negative.