Pleaseee help me its due by tonight thanks :D

Explanation:

1.) 3.2 - 5.7 = -2.5

2.) 4.25 - (-2.3) = *double negative = positive* = +6.55

3.) -0.18-2 = -2.18 *2 negatives will add numbers, but the sign remains negative*

4.) -9 + 2.5 = -6.5 *since 9 is greater, we will use its sign, then subtract the two*

5.) (-9 + 5) +4 = -4 +4 = 0

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.