Respuesta :

Answer:

x = 13

Step-by-step explanation:

Since AB = AC , then Δ ABC is isosceles

So the base angles are congruent , both 2x + 15

The sum of the 3 angles = 180° , then

2x + 15 + 2x + 15 + 98 = 180

4x + 128 = 180 ( subtract 128 from both sides )

4x = 52 ( divide both sides by 4 )

x = 13

 

prachidhruw07

as, AC = AB so, angle C = angle B

so,. value of Angle b = 2x + 15° as well,

hope this answer helps you dear...and may u have a great day ahead!

Ver imagen prachidhruw07