Question

tugazzz terlempar
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ada yg bisa bantu plis,butuh banget ini punya adek gw

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Answer 1

• Nilai x

3x + 10° = 2x + 20°

3x - 2x = 20° - 10°

x = 10°

• Besar sudut ABC

= 2x + 20°

= 2(10°) + 20°

= 20° + 20°

= 40°

Opsi A.

Answer 2

Penjelasan dengan langkah-langkah:

• Mencari Nilai x

∠DEF = ∠ABC

3x + 10° = 2x + 20°

3x + 10° = 2x + 20°

x + 10° = 20°

x = 20° - 10°

x = 10°

• Mencari ∠ABC

∠ABC = 2x + 20°

∠ABC = 2(10°) + 20°

∠ABC = 20° + 20°

∠ABC = 40° ( Opsi A )

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