4 years ago

Number 10 plz, i would appreciate it :)

Mathematics

1 answer:

Ket [755]4 years ago

7 0

Answer:

s = 3

Step-by-step explanation:

Since the bigger triangle is isosceles, the two smaller triangles are equal to each other because line BD is an angle bisector of <B. We also know that since they are equal to each other, side AD and DC are congruent

knowing this, we can set the equation to 3s = s + 6

subtract s from both sides: 2s = 6

divide both sides by 2: s = 3

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