Question

Help me please please

Answer 1

Answer:   7

Step-by-step explanation:

m∠ABC = 40°.  Since BD is an angle bisector (divides the angle into two congruent angles), then m∠ABD = 20° and m∠CBD = 20°

ABD = 20   and    ABD = 3x - 1

⇒ 20 = 3x - 1

⇒ 21 = 3x

⇒  7 = x

Check:

CBD = 20   and    CBD = 34 - 2x

⇒ 20 = 34 - 2x

⇒ -14 = -2x

⇒  7 = x    $\checkmark$