Question

Can someone please help me out with this question

Answer 1

the answer is 140






CB + CD=180
DA +BA=180
DA=CB
CD=BA



`16z + 12 +2( 2z + 4 )= 180 \\ 16z + 12 + 4z + 8 = 180 \\ 16z + 4z = 180 - 12 - 8 \\ 20z = 160`

`z = (160)/(20) = 8`
the value of z is 8


so BA is

`16 * (8) + 12 = 128 + 12 = 140`








good luck