Question

When simplifying the expression (-1)(-1)(247.43)(5) = (-1)(-1)(1,237.15), how many times will the sign change on the positive term? Will the final expression be positive or negative?

Answer 1

Answer= One sign change. The sign changes once when two negative numbers (-1 and -1) are multiplied, resulting in a positive number. Multiplying subsequent positive numbers doesn't change the sign, thus the final expression is positive.

Step-by-step explanation:

In order to simplify the phrase (-1)(-1)(247.43)(5), we must take multiplication rules for numbers with various signs into account. (-1)(-1) will give us a +1 since multiplying two negative numbers yields a positive number. This procedure will thus result in a single sign change, leaving the remaining equation (+1)(247.43)(5). Subsequently, we multiply positive integers, producing a positive result without altering its sign. Thus, the expression (247.43)(5) continues to be positive, providing us with a positive end result of 1237.15. As a result, there is just one sign change and a positive final expression.