In trapezoid ABCD, AB || CD, MZA=90°, AD=8 in, DC=9 in, CB=10 in, and ZB is acute. Find DB. Thanks!

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

do you have the measurements?

the first option is the answer.