Determine if the biconditional is true. If false, give a counterexample. "A figure is a square if and only if it is a rectangle."

A. The biconditional is true.

B. The biconditional is false. A rectangle does not necessarily have four congruent sides.

C. The biconditional is false. All squares are parallelograms with four 90° angles.

D. The biconditional is false. A rectangle does not necessarily have four 90° angles.

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300

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.

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it