When multiplying two real numbers, we multiply the values of the numbers and then consider the sign. Select all statements that apply. A The sign of the numbers doesn't matter, we just have to multiply the values together. B If both numbers are both positive or both negative then the result is positive, if they are different then the result is negative. C If one of the numbers is positive then the result is positive, if not then the result is negative. D A negative times anything is negative, so if there is a negative then the result is negative. Otherwise, the result is positive.

Question

Mathematics

Kingston

10 August, 03:04

When multiplying two real numbers, we multiply the values of the numbers and then consider the sign. Select all statements that apply. A The sign of the numbers doesn't matter, we just have to multiply the values together. B If both numbers are both positive or both negative then the result is positive, if they are different then the result is negative. C If one of the numbers is positive then the result is positive, if not then the result is negative. D A negative times anything is negative, so if there is a negative then the result is negative. Otherwise, the result is positive.

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Answers (1)

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Koen French · Answer 1

When multiplying two real numbers, the following rules are applied regarding the sign:

(positive) * (positive) = (positive)

(negative) * (negative) = (positive)

(positive) * (negative) = (negative)

(negative) * (positive) = (negative)

This means that like signs produce a positive product while different signs produce a negative product.

Comparing the choices to the above mentioned explanation, we will find that the correct choice is:

B. If both numbers are both positive or both negative then the result is positive, if they are different then the result is negative.