Without multiplying, determine the sign of the product (356,864)(−194,758).

the sign of the product is positive because a positive multiplied by a negative is a positive.
the sign of the product is negative because a positive multiplied by a negative is a negative.
the sign of the product is negative because the second number is negative.
the sign of the product is positive because the first number is positive.

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.