Answerr right ill give brainliest

s = -2

Step-by-step explanation:

9 = -8s - 7

+7       +7

16 = -8s

   -8

s = -2

s= -2

Step-by-step explanation:

9=-8s-7

8s=-7-9

8s=-16

s=-2

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.