Question

AYUDA IM NOT GOOD WITH MATH aka mathematics we here

Answer 1

Answer: 15

(if i'm not being a idiot)

5x=4x+3

1x = 3

3 x 5

AB=15

Answer 2

Answer:

Hola!

Step-by-step explanation:

In ∆ DBA and ∆ DCB,

DB =DB......(Common side)

AD=DC........(Given)

Angle DBC = Angle DBA.....(90° formed by the perpendicular on AC)

Hence,

∆ DBA and ∆ DCB, are congruent by SAS Criterion,

.°. AB =BC.....(C.P.C.T).....(1.)

From Equation 1,

AB =BC

$5x = 4x + 3 \\ 5x - 4x = 3 \\ x = 3$

So AB = 5 times 3 =15